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Finding the Fourth Proportional to 40,474.80, 60,715.80 and 10,891.96

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Solution

The fourth proportional to 40,474.80, 60,715.80 and 10,891.96 is: 16,338.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,474.80 : 60,715.80 = 10,891.96 : x
  2. Step 2: Convert to fraction form
    40,474.80/60,715.80 = 10,891.96/x
  3. Step 3: Cross multiply
    40,474.80x = 60,715.80 × 10,891.96
  4. Step 4: Simplify right side
    40,474.80x = 661,314,064.97
  5. Step 5: Solve for x
    x = 661,314,064.97/40,474.80
  6. Step 6: Final answer
    x = 16,338.91

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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.