Finding the Fourth Proportional to 71,711.13, 107,518.17 and 40,142.99
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Solution
The fourth proportional to 71,711.13, 107,518.17 and 40,142.99 is: 60,187.32
Step by Step Solution
- Step 1: Write the proportion equation
71,711.13 : 107,518.17 = 40,142.99 : x - Step 2: Convert to fraction form
71,711.13/107,518.17 = 40,142.99/x - Step 3: Cross multiply
71,711.13x = 107,518.17 × 40,142.99 - Step 4: Simplify right side
71,711.13x = 4,316,101,016.66 - Step 5: Solve for x
x = 4,316,101,016.66/71,711.13 - Step 6: Final answer
x = 60,187.32
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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.