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Finding the Fourth Proportional to 40,755.87, 61,129.71 and 11,176.68

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Solution

The fourth proportional to 40,755.87, 61,129.71 and 11,176.68 is: 16,763.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,755.87 : 61,129.71 = 11,176.68 : x
  2. Step 2: Convert to fraction form
    40,755.87/61,129.71 = 11,176.68/x
  3. Step 3: Cross multiply
    40,755.87x = 61,129.71 × 11,176.68
  4. Step 4: Simplify right side
    40,755.87x = 683,227,207.16
  5. Step 5: Solve for x
    x = 683,227,207.16/40,755.87
  6. Step 6: Final answer
    x = 16,763.90

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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.