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Finding the Fourth Proportional to 83,382.80, 124,942.44 and 66,850.16

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Solution

The fourth proportional to 83,382.80, 124,942.44 and 66,850.16 is: 100,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,382.80 : 124,942.44 = 66,850.16 : x
  2. Step 2: Convert to fraction form
    83,382.80/124,942.44 = 66,850.16/x
  3. Step 3: Cross multiply
    83,382.80x = 124,942.44 × 66,850.16
  4. Step 4: Simplify right side
    83,382.80x = 8,352,422,104.79
  5. Step 5: Solve for x
    x = 8,352,422,104.79/83,382.80
  6. Step 6: Final answer
    x = 100,169.60

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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.