Home / 87,921.64-131,882.61-21,361.81

Finding the Fourth Proportional to 87,921.64, 131,882.61 and 21,361.81

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Solution

The fourth proportional to 87,921.64, 131,882.61 and 21,361.81 is: 32,042.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,921.64 : 131,882.61 = 21,361.81 : x
  2. Step 2: Convert to fraction form
    87,921.64/131,882.61 = 21,361.81/x
  3. Step 3: Cross multiply
    87,921.64x = 131,882.61 × 21,361.81
  4. Step 4: Simplify right side
    87,921.64x = 2,817,251,257.12
  5. Step 5: Solve for x
    x = 2,817,251,257.12/87,921.64
  6. Step 6: Final answer
    x = 32,042.75

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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.