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Finding the Fourth Proportional to 92,640.57, 138,959.83 and 22,519.95

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Solution

The fourth proportional to 92,640.57, 138,959.83 and 22,519.95 is: 33,779.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,640.57 : 138,959.83 = 22,519.95 : x
  2. Step 2: Convert to fraction form
    92,640.57/138,959.83 = 22,519.95/x
  3. Step 3: Cross multiply
    92,640.57x = 138,959.83 × 22,519.95
  4. Step 4: Simplify right side
    92,640.57x = 3,129,368,423.61
  5. Step 5: Solve for x
    x = 3,129,368,423.61/92,640.57
  6. Step 6: Final answer
    x = 33,779.68

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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.