Home / 82,757.38-124,136.34-20,427.88

Finding the Fourth Proportional to 82,757.38, 124,136.34 and 20,427.88

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Solution

The fourth proportional to 82,757.38, 124,136.34 and 20,427.88 is: 30,641.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,757.38 : 124,136.34 = 20,427.88 : x
  2. Step 2: Convert to fraction form
    82,757.38/124,136.34 = 20,427.88/x
  3. Step 3: Cross multiply
    82,757.38x = 124,136.34 × 20,427.88
  4. Step 4: Simplify right side
    82,757.38x = 2,535,842,257.16
  5. Step 5: Solve for x
    x = 2,535,842,257.16/82,757.38
  6. Step 6: Final answer
    x = 30,641.89

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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.