Home / 87,938.46-131,906.49-21,378.39

Finding the Fourth Proportional to 87,938.46, 131,906.49 and 21,378.39

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Solution

The fourth proportional to 87,938.46, 131,906.49 and 21,378.39 is: 32,067.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,938.46 : 131,906.49 = 21,378.39 : x
  2. Step 2: Convert to fraction form
    87,938.46/131,906.49 = 21,378.39/x
  3. Step 3: Cross multiply
    87,938.46x = 131,906.49 × 21,378.39
  4. Step 4: Simplify right side
    87,938.46x = 2,819,948,386.75
  5. Step 5: Solve for x
    x = 2,819,948,386.75/87,938.46
  6. Step 6: Final answer
    x = 32,067.29

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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.