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Finding the Fourth Proportional to 67,761.86, 101,575.13 and 45,291.47

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Solution

The fourth proportional to 67,761.86, 101,575.13 and 45,291.47 is: 67,891.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,761.86 : 101,575.13 = 45,291.47 : x
  2. Step 2: Convert to fraction form
    67,761.86/101,575.13 = 45,291.47/x
  3. Step 3: Cross multiply
    67,761.86x = 101,575.13 × 45,291.47
  4. Step 4: Simplify right side
    67,761.86x = 4,600,486,388.65
  5. Step 5: Solve for x
    x = 4,600,486,388.65/67,761.86
  6. Step 6: Final answer
    x = 67,891.97

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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.