Home / 83,640.62-125,380.29-28,206.38

Finding the Fourth Proportional to 83,640.62, 125,380.29 and 28,206.38

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Solution

The fourth proportional to 83,640.62, 125,380.29 and 28,206.38 is: 42,282.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,640.62 : 125,380.29 = 28,206.38 : x
  2. Step 2: Convert to fraction form
    83,640.62/125,380.29 = 28,206.38/x
  3. Step 3: Cross multiply
    83,640.62x = 125,380.29 × 28,206.38
  4. Step 4: Simplify right side
    83,640.62x = 3,536,524,104.25
  5. Step 5: Solve for x
    x = 3,536,524,104.25/83,640.62
  6. Step 6: Final answer
    x = 42,282.38

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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.