Home / 68,961.52-103,442.10-18,360.55

Finding the Fourth Proportional to 68,961.52, 103,442.10 and 18,360.55

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Solution

The fourth proportional to 68,961.52, 103,442.10 and 18,360.55 is: 27,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,961.52 : 103,442.10 = 18,360.55 : x
  2. Step 2: Convert to fraction form
    68,961.52/103,442.10 = 18,360.55/x
  3. Step 3: Cross multiply
    68,961.52x = 103,442.10 × 18,360.55
  4. Step 4: Simplify right side
    68,961.52x = 1,899,253,909.61
  5. Step 5: Solve for x
    x = 1,899,253,909.61/68,961.52
  6. Step 6: Final answer
    x = 27,540.78

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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.