Home / 87,882.36-132,513-80,534.04

Finding the Fourth Proportional to 87,882.36, 132,513 and 80,534.04

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Solution

The fourth proportional to 87,882.36, 132,513 and 80,534.04 is: 121,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,882.36 : 132,513 = 80,534.04 : x
  2. Step 2: Convert to fraction form
    87,882.36/132,513 = 80,534.04/x
  3. Step 3: Cross multiply
    87,882.36x = 132,513 × 80,534.04
  4. Step 4: Simplify right side
    87,882.36x = 10,671,807,242.52
  5. Step 5: Solve for x
    x = 10,671,807,242.52/87,882.36
  6. Step 6: Final answer
    x = 121,432.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.