Home / 82,456.20-123,684.30-52,931.70

Finding the Fourth Proportional to 82,456.20, 123,684.30 and 52,931.70

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Solution

The fourth proportional to 82,456.20, 123,684.30 and 52,931.70 is: 79,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,456.20 : 123,684.30 = 52,931.70 : x
  2. Step 2: Convert to fraction form
    82,456.20/123,684.30 = 52,931.70/x
  3. Step 3: Cross multiply
    82,456.20x = 123,684.30 × 52,931.70
  4. Step 4: Simplify right side
    82,456.20x = 6,546,820,262.31
  5. Step 5: Solve for x
    x = 6,546,820,262.31/82,456.20
  6. Step 6: Final answer
    x = 79,397.55

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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.