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Finding the Fourth Proportional to 40,469.88, 60,708.87 and 10,890.84

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Solution

The fourth proportional to 40,469.88, 60,708.87 and 10,890.84 is: 16,337.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,469.88 : 60,708.87 = 10,890.84 : x
  2. Step 2: Convert to fraction form
    40,469.88/60,708.87 = 10,890.84/x
  3. Step 3: Cross multiply
    40,469.88x = 60,708.87 × 10,890.84
  4. Step 4: Simplify right side
    40,469.88x = 661,170,589.75
  5. Step 5: Solve for x
    x = 661,170,589.75/40,469.88
  6. Step 6: Final answer
    x = 16,337.35

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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.