Finding the Fourth Proportional to 115,785.12, 173,691.36 and 36,871.68
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Solution
The fourth proportional to 115,785.12, 173,691.36 and 36,871.68 is: 55,311.88
Step by Step Solution
- Step 1: Write the proportion equation
115,785.12 : 173,691.36 = 36,871.68 : x - Step 2: Convert to fraction form
115,785.12/173,691.36 = 36,871.68/x - Step 3: Cross multiply
115,785.12x = 173,691.36 × 36,871.68 - Step 4: Simplify right side
115,785.12x = 6,404,292,244.68 - Step 5: Solve for x
x = 6,404,292,244.68/115,785.12 - Step 6: Final answer
x = 55,311.88
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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.