Home / 82,650.20-123,975.30-20,320.70

Finding the Fourth Proportional to 82,650.20, 123,975.30 and 20,320.70

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Solution

The fourth proportional to 82,650.20, 123,975.30 and 20,320.70 is: 30,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,650.20 : 123,975.30 = 20,320.70 : x
  2. Step 2: Convert to fraction form
    82,650.20/123,975.30 = 20,320.70/x
  3. Step 3: Cross multiply
    82,650.20x = 123,975.30 × 20,320.70
  4. Step 4: Simplify right side
    82,650.20x = 2,519,264,878.71
  5. Step 5: Solve for x
    x = 2,519,264,878.71/82,650.20
  6. Step 6: Final answer
    x = 30,481.05

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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.