Finding the Fourth Proportional to 71,658.88, 107,489.40 and 27,288.09
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Solution
The fourth proportional to 71,658.88, 107,489.40 and 27,288.09 is: 40,932.55
Step by Step Solution
- Step 1: Write the proportion equation
71,658.88 : 107,489.40 = 27,288.09 : x - Step 2: Convert to fraction form
71,658.88/107,489.40 = 27,288.09/x - Step 3: Cross multiply
71,658.88x = 107,489.40 × 27,288.09 - Step 4: Simplify right side
71,658.88x = 2,933,180,421.25 - Step 5: Solve for x
x = 2,933,180,421.25/71,658.88 - Step 6: Final answer
x = 40,932.55
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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.