Finding the Fourth Proportional to 83,882.79, 115,720.09 and 49,871.99
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Solution
The fourth proportional to 83,882.79, 115,720.09 and 49,871.99 is: 68,800.66
Step by Step Solution
- Step 1: Write the proportion equation
83,882.79 : 115,720.09 = 49,871.99 : x - Step 2: Convert to fraction form
83,882.79/115,720.09 = 49,871.99/x - Step 3: Cross multiply
83,882.79x = 115,720.09 × 49,871.99 - Step 4: Simplify right side
83,882.79x = 5,771,191,171.28 - Step 5: Solve for x
x = 5,771,191,171.28/83,882.79 - Step 6: Final answer
x = 68,800.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.