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Finding the Fourth Proportional to 71,481.64, 107,390.02 and 67,442.22

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Solution

The fourth proportional to 71,481.64, 107,390.02 and 67,442.22 is: 101,321.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,481.64 : 107,390.02 = 67,442.22 : x
  2. Step 2: Convert to fraction form
    71,481.64/107,390.02 = 67,442.22/x
  3. Step 3: Cross multiply
    71,481.64x = 107,390.02 × 67,442.22
  4. Step 4: Simplify right side
    71,481.64x = 7,242,621,312.49
  5. Step 5: Solve for x
    x = 7,242,621,312.49/71,481.64
  6. Step 6: Final answer
    x = 101,321.42

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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.