Home / 87,427.20-131,140.80-49,972.80

Finding the Fourth Proportional to 87,427.20, 131,140.80 and 49,972.80

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Solution

The fourth proportional to 87,427.20, 131,140.80 and 49,972.80 is: 74,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,427.20 : 131,140.80 = 49,972.80 : x
  2. Step 2: Convert to fraction form
    87,427.20/131,140.80 = 49,972.80/x
  3. Step 3: Cross multiply
    87,427.20x = 131,140.80 × 49,972.80
  4. Step 4: Simplify right side
    87,427.20x = 6,553,472,970.24
  5. Step 5: Solve for x
    x = 6,553,472,970.24/87,427.20
  6. Step 6: Final answer
    x = 74,959.20

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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.