Home / 54,121.20-81,138.60-22,930.80

Finding the Fourth Proportional to 54,121.20, 81,138.60 and 22,930.80

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Solution

The fourth proportional to 54,121.20, 81,138.60 and 22,930.80 is: 34,377.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,121.20 : 81,138.60 = 22,930.80 : x
  2. Step 2: Convert to fraction form
    54,121.20/81,138.60 = 22,930.80/x
  3. Step 3: Cross multiply
    54,121.20x = 81,138.60 × 22,930.80
  4. Step 4: Simplify right side
    54,121.20x = 1,860,573,008.88
  5. Step 5: Solve for x
    x = 1,860,573,008.88/54,121.20
  6. Step 6: Final answer
    x = 34,377.90

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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.