Home / 66,739.05-100,003.20-54,198.03

Finding the Fourth Proportional to 66,739.05, 100,003.20 and 54,198.03

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Solution

The fourth proportional to 66,739.05, 100,003.20 and 54,198.03 is: 81,211.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,739.05 : 100,003.20 = 54,198.03 : x
  2. Step 2: Convert to fraction form
    66,739.05/100,003.20 = 54,198.03/x
  3. Step 3: Cross multiply
    66,739.05x = 100,003.20 × 54,198.03
  4. Step 4: Simplify right side
    66,739.05x = 5,419,976,433.70
  5. Step 5: Solve for x
    x = 5,419,976,433.70/66,739.05
  6. Step 6: Final answer
    x = 81,211.47

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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.