Home / 87,627.60-131,538.60-54,385.20

Finding the Fourth Proportional to 87,627.60, 131,538.60 and 54,385.20

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Solution

The fourth proportional to 87,627.60, 131,538.60 and 54,385.20 is: 81,638.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,627.60 : 131,538.60 = 54,385.20 : x
  2. Step 2: Convert to fraction form
    87,627.60/131,538.60 = 54,385.20/x
  3. Step 3: Cross multiply
    87,627.60x = 131,538.60 × 54,385.20
  4. Step 4: Simplify right side
    87,627.60x = 7,153,753,068.72
  5. Step 5: Solve for x
    x = 7,153,753,068.72/87,627.60
  6. Step 6: Final answer
    x = 81,638.13

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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.