Home / 82,540.20-123,808.74-20,211.24

Finding the Fourth Proportional to 82,540.20, 123,808.74 and 20,211.24

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Solution

The fourth proportional to 82,540.20, 123,808.74 and 20,211.24 is: 30,316.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,540.20 : 123,808.74 = 20,211.24 : x
  2. Step 2: Convert to fraction form
    82,540.20/123,808.74 = 20,211.24/x
  3. Step 3: Cross multiply
    82,540.20x = 123,808.74 × 20,211.24
  4. Step 4: Simplify right side
    82,540.20x = 2,502,328,158.24
  5. Step 5: Solve for x
    x = 2,502,328,158.24/82,540.20
  6. Step 6: Final answer
    x = 30,316.48

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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.