Finding the Fourth Proportional to 71,708.13, 107,525.48 and 42,134.85
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Solution
The fourth proportional to 71,708.13, 107,525.48 and 42,134.85 is: 63,180.70
Step by Step Solution
- Step 1: Write the proportion equation
71,708.13 : 107,525.48 = 42,134.85 : x - Step 2: Convert to fraction form
71,708.13/107,525.48 = 42,134.85/x - Step 3: Cross multiply
71,708.13x = 107,525.48 × 42,134.85 - Step 4: Simplify right side
71,708.13x = 4,530,569,760.30 - Step 5: Solve for x
x = 4,530,569,760.30/71,708.13 - Step 6: Final answer
x = 63,180.70
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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.