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Finding the Fourth Proportional to 71,372.40, 107,058.60 and 29,819.40

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Solution

The fourth proportional to 71,372.40, 107,058.60 and 29,819.40 is: 44,729.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,372.40 : 107,058.60 = 29,819.40 : x
  2. Step 2: Convert to fraction form
    71,372.40/107,058.60 = 29,819.40/x
  3. Step 3: Cross multiply
    71,372.40x = 107,058.60 × 29,819.40
  4. Step 4: Simplify right side
    71,372.40x = 3,192,423,216.84
  5. Step 5: Solve for x
    x = 3,192,423,216.84/71,372.40
  6. Step 6: Final answer
    x = 44,729.10

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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.