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Finding the Fourth Proportional to 87,754, 131,644.68 and 28,575.72

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Solution

The fourth proportional to 87,754, 131,644.68 and 28,575.72 is: 42,868.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,754 : 131,644.68 = 28,575.72 : x
  2. Step 2: Convert to fraction form
    87,754/131,644.68 = 28,575.72/x
  3. Step 3: Cross multiply
    87,754x = 131,644.68 × 28,575.72
  4. Step 4: Simplify right side
    87,754x = 3,761,841,515.17
  5. Step 5: Solve for x
    x = 3,761,841,515.17/87,754
  6. Step 6: Final answer
    x = 42,868.03

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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.