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Finding the Fourth Proportional to 82,575.70, 123,863.55 and 20,246.20

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Solution

The fourth proportional to 82,575.70, 123,863.55 and 20,246.20 is: 30,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,575.70 : 123,863.55 = 20,246.20 : x
  2. Step 2: Convert to fraction form
    82,575.70/123,863.55 = 20,246.20/x
  3. Step 3: Cross multiply
    82,575.70x = 123,863.55 × 20,246.20
  4. Step 4: Simplify right side
    82,575.70x = 2,507,766,206.01
  5. Step 5: Solve for x
    x = 2,507,766,206.01/82,575.70
  6. Step 6: Final answer
    x = 30,369.30

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Similar ratio
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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.