Finding the Fourth Proportional to 88,781.87, 133,129.07 and 73,997.75
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Solution
The fourth proportional to 88,781.87, 133,129.07 and 73,997.75 is: 110,960.17
Step by Step Solution
- Step 1: Write the proportion equation
88,781.87 : 133,129.07 = 73,997.75 : x - Step 2: Convert to fraction form
88,781.87/133,129.07 = 73,997.75/x - Step 3: Cross multiply
88,781.87x = 133,129.07 × 73,997.75 - Step 4: Simplify right side
88,781.87x = 9,851,251,879.92 - Step 5: Solve for x
x = 9,851,251,879.92/88,781.87 - Step 6: Final answer
x = 110,960.17
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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.