Home / 87,921.63-131,882.61-21,361.82

Finding the Fourth Proportional to 87,921.63, 131,882.61 and 21,361.82

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Solution

The fourth proportional to 87,921.63, 131,882.61 and 21,361.82 is: 32,042.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,921.63 : 131,882.61 = 21,361.82 : x
  2. Step 2: Convert to fraction form
    87,921.63/131,882.61 = 21,361.82/x
  3. Step 3: Cross multiply
    87,921.63x = 131,882.61 × 21,361.82
  4. Step 4: Simplify right side
    87,921.63x = 2,817,251,916.54
  5. Step 5: Solve for x
    x = 2,817,251,916.54/87,921.63
  6. Step 6: Final answer
    x = 32,042.76

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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.