Home / 87,874.20-131,781.21-28,695.18

Finding the Fourth Proportional to 87,874.20, 131,781.21 and 28,695.18

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Solution

The fourth proportional to 87,874.20, 131,781.21 and 28,695.18 is: 43,032.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,874.20 : 131,781.21 = 28,695.18 : x
  2. Step 2: Convert to fraction form
    87,874.20/131,781.21 = 28,695.18/x
  3. Step 3: Cross multiply
    87,874.20x = 131,781.21 × 28,695.18
  4. Step 4: Simplify right side
    87,874.20x = 3,781,485,541.57
  5. Step 5: Solve for x
    x = 3,781,485,541.57/87,874.20
  6. Step 6: Final answer
    x = 43,032.94

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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.