Home / 82,635.52-123,952.20-20,306.56

Finding the Fourth Proportional to 82,635.52, 123,952.20 and 20,306.56

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Solution

The fourth proportional to 82,635.52, 123,952.20 and 20,306.56 is: 30,459.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,635.52 : 123,952.20 = 20,306.56 : x
  2. Step 2: Convert to fraction form
    82,635.52/123,952.20 = 20,306.56/x
  3. Step 3: Cross multiply
    82,635.52x = 123,952.20 × 20,306.56
  4. Step 4: Simplify right side
    82,635.52x = 2,517,042,786.43
  5. Step 5: Solve for x
    x = 2,517,042,786.43/82,635.52
  6. Step 6: Final answer
    x = 30,459.57

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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.