Finding the Fourth Proportional to 85,831.56, 128,753.10 and 29,677.14
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Solution
The fourth proportional to 85,831.56, 128,753.10 and 29,677.14 is: 44,517.70
Step by Step Solution
- Step 1: Write the proportion equation
85,831.56 : 128,753.10 = 29,677.14 : x - Step 2: Convert to fraction form
85,831.56/128,753.10 = 29,677.14/x - Step 3: Cross multiply
85,831.56x = 128,753.10 × 29,677.14 - Step 4: Simplify right side
85,831.56x = 3,821,023,774.13 - Step 5: Solve for x
x = 3,821,023,774.13/85,831.56 - Step 6: Final answer
x = 44,517.70
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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.