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Upon the death of his uncle, David receives an inheritance of \(\$ 50,000,\) which he invests for 16 yr at \(4.3 \%,\) compounded continuously. What is the future value of the inheritance?

Short Answer

Expert verified
The future value of the inheritance is approximately \$99,525.

Step by step solution

01

Understand Continuous Compounding Formula

The formula for future value with continuous compounding is given by \[ FV = P imes e^{(r imes t)} \] where \( P \) is the present value (initial amount), \( r \) is the annual interest rate (expressed as a decimal), \( t \) is the time in years, and \( e \) is the base of the natural logarithm, approximately equal to 2.71828.
02

Identify Given Values

From the problem statement, \( P = 50,000 \), \( r = 4.3\% = 0.043 \), and \( t = 16 \) years. These values will be used in the continuous compounding formula to find the future value.
03

Substitute Values Into Formula

Input the identified values into the continuous compounding formula:\[ FV = 50,000 \times e^{(0.043 imes 16)} \] This will help us calculate the future value of the investment after 16 years.
04

Calculate the Exponential Component

First, calculate the exponent:\[ 0.043 \times 16 = 0.688 \]Next, find \( e^{0.688} \) using a calculator, which is approximately 1.9905.
05

Solve For Future Value

Finally, multiply the initial investment by the calculated exponential factor:\[ FV = 50,000 \times 1.9905 = 99,525 \]Therefore, the future value of David's inheritance after 16 years is approximately \$99,525.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Future Value Calculation
Imagine you're planting a seed today with hopes that it will grow into a large tree in the future. The future value in financial terms is quite similar. It's the amount of money your current investment will grow into, given a certain interest rate and time frame. Calculating the future value is crucial for planning ahead, especially when you want to see how much an investment is worth after a set period.

When it comes to continuous compounding, the calculation involves a specific formula: \( FV = P \times e^{(r \times t)} \). Here's what each component means:
  • \( P \) is your starting amount (the principal).
  • \( r \) is the annual interest rate, shown as a decimal.
  • \( t \) indicates the total time the money is invested or borrowed for, in years.
  • \( e \) is a mathematical constant approximately equal to 2.71828.

This formula allows you to predict the end value of your investments, streams of income, or savings, helping you understand how well your money can grow over a particular time frame.
Investment Growth
Investment growth is like watching a seedling sprout into a full-grown plant. You plant an initial amount of money, hope for the right conditions (interest rates), and let time do its work.

Continuous compounding is particularly noteworthy because it assumes the investment grows onward without stopping, meaning you're consistently earning interest not just on your principal, but also on accumulated interest. This makes money grow faster compared to standard compounding periods like annually or semi-annually.
  • It emphasizes how time is a crucial factor—longer investment duration can lead to significantly greater returns.
  • Even small changes in interest rates can substantially impact the growth of your investment.
  • Choosing continuous compounding as the method can sometimes yield higher future values than traditional compounding.

Understanding how different factors like time and rate affect your investment's growth will assist in making informed financial decisions and optimizing returns.
Exponential Functions
Exponential functions are a mathematical way to depict how quantities grow rapidly. In finance, they're pivotal in understanding how interest accumulation works over time, especially through continuous compounding.

The essence of an exponential function lies in its rapid escalation: the more time that passes, the steeper the growth. In the equation \( e^{(r \times t)} \), "e" is the base of the natural logarithms, also known as Euler's number.
  • These functions are characterized by a constant growth rate, amplifying any change quickly as time progresses.
  • The geometric progression inherent to this function is what drives the impressive growth in investments.
  • Understanding this concept helps clarify why continuously compounded interest can lead to more substantial investment growth over time compared to regular compounding methods.

With exponential growth, a striking transformation in value is seen, making it an exciting yet crucial aspect of investments and economic strategies.

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Most popular questions from this chapter

The validity of the WeberFechner Law has been the subject of great debate among psychologists. An alternative model, $$ \frac{d R}{d S}=k \cdot \frac{R}{S} $$ where \(k\) is a positive constant, has been proposed. Find the general solution of this equation. (This model has also been referred to as the Power Law of Stimulus-Response.)

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Gusto Stick is a professional baseball player who has just become a free agent. His attorney begins negotiations with an interested team by asking for a contract that provides Gusto with an income stream given by \(R_{1}(t)=800,000+340,000 t,\) over \(10 \mathrm{yr}\), where \(t\) is in years. (Round all answers to the nearest \(\$ 100 .)\) a) What is the accumulated future value of the offer. assuming an interest rate of \(5 \%,\) compounded continuously? b) What is the accumulated present value of the offer, assuming an interest rate of \(5 \%,\) compounded continuously? c) The team counters by offering an income stream given by \(R_{2}(t)=600,000+210,000 t\). What is the accumulated present value of this counteroffer? d) Gusto comes back with a demand for an income stream given by \(R_{3}(t)=1,000,000+250,000 t\). What is the accumulated present value of this income stream? e) Gusto signs a contract for the income stream in part (d) but decides to live on \(\$ 500,000\) each year, investing the rest at \(5 \%,\) compounded continuously. What is the accumulated future value of the remaining income, assuming an interest rate of \(5 \%,\) compounded continuously?

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