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Finding the Fourth Proportional to 84,103.80, 126,055.80 and 44,640.60

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Solution

The fourth proportional to 84,103.80, 126,055.80 and 44,640.60 is: 66,907.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,103.80 : 126,055.80 = 44,640.60 : x
  2. Step 2: Convert to fraction form
    84,103.80/126,055.80 = 44,640.60/x
  3. Step 3: Cross multiply
    84,103.80x = 126,055.80 × 44,640.60
  4. Step 4: Simplify right side
    84,103.80x = 5,627,206,545.48
  5. Step 5: Solve for x
    x = 5,627,206,545.48/84,103.80
  6. Step 6: Final answer
    x = 66,907.88

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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.