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Finding the Fourth Proportional to 87,658.80, 131,488.20 and 25,335.60

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Solution

The fourth proportional to 87,658.80, 131,488.20 and 25,335.60 is: 38,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,658.80 : 131,488.20 = 25,335.60 : x
  2. Step 2: Convert to fraction form
    87,658.80/131,488.20 = 25,335.60/x
  3. Step 3: Cross multiply
    87,658.80x = 131,488.20 × 25,335.60
  4. Step 4: Simplify right side
    87,658.80x = 3,331,332,439.92
  5. Step 5: Solve for x
    x = 3,331,332,439.92/87,658.80
  6. Step 6: Final answer
    x = 38,003.40

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1.5x scale

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.