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Finding the Fourth Proportional to 87,624.60, 131,436.90 and 40,968.60

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Solution

The fourth proportional to 87,624.60, 131,436.90 and 40,968.60 is: 61,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,624.60 : 131,436.90 = 40,968.60 : x
  2. Step 2: Convert to fraction form
    87,624.60/131,436.90 = 40,968.60/x
  3. Step 3: Cross multiply
    87,624.60x = 131,436.90 × 40,968.60
  4. Step 4: Simplify right side
    87,624.60x = 5,384,785,781.34
  5. Step 5: Solve for x
    x = 5,384,785,781.34/87,624.60
  6. Step 6: Final answer
    x = 61,452.90

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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.