Home / 87,966.10-131,949.15-21,405.70

Finding the Fourth Proportional to 87,966.10, 131,949.15 and 21,405.70

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Solution

The fourth proportional to 87,966.10, 131,949.15 and 21,405.70 is: 32,108.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,966.10 : 131,949.15 = 21,405.70 : x
  2. Step 2: Convert to fraction form
    87,966.10/131,949.15 = 21,405.70/x
  3. Step 3: Cross multiply
    87,966.10x = 131,949.15 × 21,405.70
  4. Step 4: Simplify right side
    87,966.10x = 2,824,463,920.16
  5. Step 5: Solve for x
    x = 2,824,463,920.16/87,966.10
  6. Step 6: Final answer
    x = 32,108.55

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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.