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Finding the Fourth Proportional to 40,747.80, 61,121.70 and 22,960.20

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Solution

The fourth proportional to 40,747.80, 61,121.70 and 22,960.20 is: 34,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,747.80 : 61,121.70 = 22,960.20 : x
  2. Step 2: Convert to fraction form
    40,747.80/61,121.70 = 22,960.20/x
  3. Step 3: Cross multiply
    40,747.80x = 61,121.70 × 22,960.20
  4. Step 4: Simplify right side
    40,747.80x = 1,403,366,456.34
  5. Step 5: Solve for x
    x = 1,403,366,456.34/40,747.80
  6. Step 6: Final answer
    x = 34,440.30

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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.