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Finding the Fourth Proportional to 73,761.86, 110,650.08 and 21,179.10

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Solution

The fourth proportional to 73,761.86, 110,650.08 and 21,179.10 is: 31,770.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,761.86 : 110,650.08 = 21,179.10 : x
  2. Step 2: Convert to fraction form
    73,761.86/110,650.08 = 21,179.10/x
  3. Step 3: Cross multiply
    73,761.86x = 110,650.08 × 21,179.10
  4. Step 4: Simplify right side
    73,761.86x = 2,343,469,109.33
  5. Step 5: Solve for x
    x = 2,343,469,109.33/73,761.86
  6. Step 6: Final answer
    x = 31,770.74

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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.