Home / 66,939.03-100,408.68-20,191.95

Finding the Fourth Proportional to 66,939.03, 100,408.68 and 20,191.95

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Solution

The fourth proportional to 66,939.03, 100,408.68 and 20,191.95 is: 30,287.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,939.03 : 100,408.68 = 20,191.95 : x
  2. Step 2: Convert to fraction form
    66,939.03/100,408.68 = 20,191.95/x
  3. Step 3: Cross multiply
    66,939.03x = 100,408.68 × 20,191.95
  4. Step 4: Simplify right side
    66,939.03x = 2,027,447,046.13
  5. Step 5: Solve for x
    x = 2,027,447,046.13/66,939.03
  6. Step 6: Final answer
    x = 30,287.97

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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.