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Finding the Fourth Proportional to 84,044.80, 126,067 and 28,640.80

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Solution

The fourth proportional to 84,044.80, 126,067 and 28,640.80 is: 42,961.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,044.80 : 126,067 = 28,640.80 : x
  2. Step 2: Convert to fraction form
    84,044.80/126,067 = 28,640.80/x
  3. Step 3: Cross multiply
    84,044.80x = 126,067 × 28,640.80
  4. Step 4: Simplify right side
    84,044.80x = 3,610,659,733.60
  5. Step 5: Solve for x
    x = 3,610,659,733.60/84,044.80
  6. Step 6: Final answer
    x = 42,961.13

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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.