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Finding the Fourth Proportional to 71,579.66, 107,399.82 and 38,291

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Solution

The fourth proportional to 71,579.66, 107,399.82 and 38,291 is: 57,452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,579.66 : 107,399.82 = 38,291 : x
  2. Step 2: Convert to fraction form
    71,579.66/107,399.82 = 38,291/x
  3. Step 3: Cross multiply
    71,579.66x = 107,399.82 × 38,291
  4. Step 4: Simplify right side
    71,579.66x = 4,112,446,507.62
  5. Step 5: Solve for x
    x = 4,112,446,507.62/71,579.66
  6. Step 6: Final answer
    x = 57,452.72

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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.