Home / 87,646.28-131,469.42-21,086.41

Finding the Fourth Proportional to 87,646.28, 131,469.42 and 21,086.41

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Solution

The fourth proportional to 87,646.28, 131,469.42 and 21,086.41 is: 31,629.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,646.28 : 131,469.42 = 21,086.41 : x
  2. Step 2: Convert to fraction form
    87,646.28/131,469.42 = 21,086.41/x
  3. Step 3: Cross multiply
    87,646.28x = 131,469.42 × 21,086.41
  4. Step 4: Simplify right side
    87,646.28x = 2,772,217,599.57
  5. Step 5: Solve for x
    x = 2,772,217,599.57/87,646.28
  6. Step 6: Final answer
    x = 31,629.61

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Double scale
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Similar ratio
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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.