Home / 67,124.45-100,691.11-19,743.78

Finding the Fourth Proportional to 67,124.45, 100,691.11 and 19,743.78

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Solution

The fourth proportional to 67,124.45, 100,691.11 and 19,743.78 is: 29,616.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,124.45 : 100,691.11 = 19,743.78 : x
  2. Step 2: Convert to fraction form
    67,124.45/100,691.11 = 19,743.78/x
  3. Step 3: Cross multiply
    67,124.45x = 100,691.11 × 19,743.78
  4. Step 4: Simplify right side
    67,124.45x = 1,988,022,704.25
  5. Step 5: Solve for x
    x = 1,988,022,704.25/67,124.45
  6. Step 6: Final answer
    x = 29,616.97

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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.