Home / 87,729.20-131,580.05-28,564.47

Finding the Fourth Proportional to 87,729.20, 131,580.05 and 28,564.47

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Solution

The fourth proportional to 87,729.20, 131,580.05 and 28,564.47 is: 42,842.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,729.20 : 131,580.05 = 28,564.47 : x
  2. Step 2: Convert to fraction form
    87,729.20/131,580.05 = 28,564.47/x
  3. Step 3: Cross multiply
    87,729.20x = 131,580.05 × 28,564.47
  4. Step 4: Simplify right side
    87,729.20x = 3,758,513,732.92
  5. Step 5: Solve for x
    x = 3,758,513,732.92/87,729.20
  6. Step 6: Final answer
    x = 42,842.22

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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.