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Finding the Fourth Proportional to 83,716.80, 125,575.20 and 71,032.20

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Solution

The fourth proportional to 83,716.80, 125,575.20 and 71,032.20 is: 106,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,716.80 : 125,575.20 = 71,032.20 : x
  2. Step 2: Convert to fraction form
    83,716.80/125,575.20 = 71,032.20/x
  3. Step 3: Cross multiply
    83,716.80x = 125,575.20 × 71,032.20
  4. Step 4: Simplify right side
    83,716.80x = 8,919,882,721.44
  5. Step 5: Solve for x
    x = 8,919,882,721.44/83,716.80
  6. Step 6: Final answer
    x = 106,548.30

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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.