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Finding the Fourth Proportional to 79,469.88, 109,668 and 43,171.08

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Solution

The fourth proportional to 79,469.88, 109,668 and 43,171.08 is: 59,575.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,469.88 : 109,668 = 43,171.08 : x
  2. Step 2: Convert to fraction form
    79,469.88/109,668 = 43,171.08/x
  3. Step 3: Cross multiply
    79,469.88x = 109,668 × 43,171.08
  4. Step 4: Simplify right side
    79,469.88x = 4,734,486,001.44
  5. Step 5: Solve for x
    x = 4,734,486,001.44/79,469.88
  6. Step 6: Final answer
    x = 59,575.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.