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Finding the Fourth Proportional to 83,726.80, 125,590.20 and 71,042.20

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Solution

The fourth proportional to 83,726.80, 125,590.20 and 71,042.20 is: 106,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,726.80 : 125,590.20 = 71,042.20 : x
  2. Step 2: Convert to fraction form
    83,726.80/125,590.20 = 71,042.20/x
  3. Step 3: Cross multiply
    83,726.80x = 125,590.20 × 71,042.20
  4. Step 4: Simplify right side
    83,726.80x = 8,922,204,106.44
  5. Step 5: Solve for x
    x = 8,922,204,106.44/83,726.80
  6. Step 6: Final answer
    x = 106,563.30

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1.5x scale

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.