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Finding the Fourth Proportional to 87,658.60, 131,487.90 and 50,333.80

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Solution

The fourth proportional to 87,658.60, 131,487.90 and 50,333.80 is: 75,500.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,658.60 : 131,487.90 = 50,333.80 : x
  2. Step 2: Convert to fraction form
    87,658.60/131,487.90 = 50,333.80/x
  3. Step 3: Cross multiply
    87,658.60x = 131,487.90 × 50,333.80
  4. Step 4: Simplify right side
    87,658.60x = 6,618,285,661.02
  5. Step 5: Solve for x
    x = 6,618,285,661.02/87,658.60
  6. Step 6: Final answer
    x = 75,500.70

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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.