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Finding the Fourth Proportional to 71,388, 107,082.74 and 29,257.27

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Solution

The fourth proportional to 71,388, 107,082.74 and 29,257.27 is: 43,886.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,388 : 107,082.74 = 29,257.27 : x
  2. Step 2: Convert to fraction form
    71,388/107,082.74 = 29,257.27/x
  3. Step 3: Cross multiply
    71,388x = 107,082.74 × 29,257.27
  4. Step 4: Simplify right side
    71,388x = 3,132,948,441.96
  5. Step 5: Solve for x
    x = 3,132,948,441.96/71,388
  6. Step 6: Final answer
    x = 43,886.21

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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.