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Finding the Fourth Proportional to 83,843.64, 125,780.88 and 27,687.56

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Solution

The fourth proportional to 83,843.64, 125,780.88 and 27,687.56 is: 41,536.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,843.64 : 125,780.88 = 27,687.56 : x
  2. Step 2: Convert to fraction form
    83,843.64/125,780.88 = 27,687.56/x
  3. Step 3: Cross multiply
    83,843.64x = 125,780.88 × 27,687.56
  4. Step 4: Simplify right side
    83,843.64x = 3,482,565,661.85
  5. Step 5: Solve for x
    x = 3,482,565,661.85/83,843.64
  6. Step 6: Final answer
    x = 41,536.43

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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.