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Finding the Fourth Proportional to 84,372, 126,565.29 and 22,042.50

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Solution

The fourth proportional to 84,372, 126,565.29 and 22,042.50 is: 33,065.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,372 : 126,565.29 = 22,042.50 : x
  2. Step 2: Convert to fraction form
    84,372/126,565.29 = 22,042.50/x
  3. Step 3: Cross multiply
    84,372x = 126,565.29 × 22,042.50
  4. Step 4: Simplify right side
    84,372x = 2,789,815,404.83
  5. Step 5: Solve for x
    x = 2,789,815,404.83/84,372
  6. Step 6: Final answer
    x = 33,065.65

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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.