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Finding the Fourth Proportional to 82,452.80, 123,679.20 and 23,287.70

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Solution

The fourth proportional to 82,452.80, 123,679.20 and 23,287.70 is: 34,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,452.80 : 123,679.20 = 23,287.70 : x
  2. Step 2: Convert to fraction form
    82,452.80/123,679.20 = 23,287.70/x
  3. Step 3: Cross multiply
    82,452.80x = 123,679.20 × 23,287.70
  4. Step 4: Simplify right side
    82,452.80x = 2,880,204,105.84
  5. Step 5: Solve for x
    x = 2,880,204,105.84/82,452.80
  6. Step 6: Final answer
    x = 34,931.55

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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.