Finding the Fourth Proportional to 77,165.79, 115,753.21 and 29,781.14
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Solution
The fourth proportional to 77,165.79, 115,753.21 and 29,781.14 is: 44,673.46
Step by Step Solution
- Step 1: Write the proportion equation
77,165.79 : 115,753.21 = 29,781.14 : x - Step 2: Convert to fraction form
77,165.79/115,753.21 = 29,781.14/x - Step 3: Cross multiply
77,165.79x = 115,753.21 × 29,781.14 - Step 4: Simplify right side
77,165.79x = 3,447,262,552.46 - Step 5: Solve for x
x = 3,447,262,552.46/77,165.79 - Step 6: Final answer
x = 44,673.46
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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.