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Finding the Fourth Proportional to 84,001.74, 126,021.05 and 61,747.65

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Solution

The fourth proportional to 84,001.74, 126,021.05 and 61,747.65 is: 92,635.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,001.74 : 126,021.05 = 61,747.65 : x
  2. Step 2: Convert to fraction form
    84,001.74/126,021.05 = 61,747.65/x
  3. Step 3: Cross multiply
    84,001.74x = 126,021.05 × 61,747.65
  4. Step 4: Simplify right side
    84,001.74x = 7,781,503,610.85
  5. Step 5: Solve for x
    x = 7,781,503,610.85/84,001.74
  6. Step 6: Final answer
    x = 92,635.03

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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.