Finding the Fourth Proportional to 71,771.92, 107,645.08 and 21,839.92
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Solution
The fourth proportional to 71,771.92, 107,645.08 and 21,839.92 is: 32,755.99
Step by Step Solution
- Step 1: Write the proportion equation
71,771.92 : 107,645.08 = 21,839.92 : x - Step 2: Convert to fraction form
71,771.92/107,645.08 = 21,839.92/x - Step 3: Cross multiply
71,771.92x = 107,645.08 × 21,839.92 - Step 4: Simplify right side
71,771.92x = 2,350,959,935.59 - Step 5: Solve for x
x = 2,350,959,935.59/71,771.92 - Step 6: Final answer
x = 32,755.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.