Home / 87,890.64-131,834.92-21,331.48

Finding the Fourth Proportional to 87,890.64, 131,834.92 and 21,331.48

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Solution

The fourth proportional to 87,890.64, 131,834.92 and 21,331.48 is: 31,996.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,890.64 : 131,834.92 = 21,331.48 : x
  2. Step 2: Convert to fraction form
    87,890.64/131,834.92 = 21,331.48/x
  3. Step 3: Cross multiply
    87,890.64x = 131,834.92 × 21,331.48
  4. Step 4: Simplify right side
    87,890.64x = 2,812,233,959.28
  5. Step 5: Solve for x
    x = 2,812,233,959.28/87,890.64
  6. Step 6: Final answer
    x = 31,996.97

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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.