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Finding the Fourth Proportional to 71,002.20, 106,462.80 and 26,630.40

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Solution

The fourth proportional to 71,002.20, 106,462.80 and 26,630.40 is: 39,930.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,002.20 : 106,462.80 = 26,630.40 : x
  2. Step 2: Convert to fraction form
    71,002.20/106,462.80 = 26,630.40/x
  3. Step 3: Cross multiply
    71,002.20x = 106,462.80 × 26,630.40
  4. Step 4: Simplify right side
    71,002.20x = 2,835,146,949.12
  5. Step 5: Solve for x
    x = 2,835,146,949.12/71,002.20
  6. Step 6: Final answer
    x = 39,930.41

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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.