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Finding the Fourth Proportional to 103,517.55, 155,309.13 and 36,956.21

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Solution

The fourth proportional to 103,517.55, 155,309.13 and 36,956.21 is: 55,446.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,517.55 : 155,309.13 = 36,956.21 : x
  2. Step 2: Convert to fraction form
    103,517.55/155,309.13 = 36,956.21/x
  3. Step 3: Cross multiply
    103,517.55x = 155,309.13 × 36,956.21
  4. Step 4: Simplify right side
    103,517.55x = 5,739,636,046.65
  5. Step 5: Solve for x
    x = 5,739,636,046.65/103,517.55
  6. Step 6: Final answer
    x = 55,446.02

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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.