Home / 67,321.67-100,951.46-19,919.81

Finding the Fourth Proportional to 67,321.67, 100,951.46 and 19,919.81

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Solution

The fourth proportional to 67,321.67, 100,951.46 and 19,919.81 is: 29,870.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,321.67 : 100,951.46 = 19,919.81 : x
  2. Step 2: Convert to fraction form
    67,321.67/100,951.46 = 19,919.81/x
  3. Step 3: Cross multiply
    67,321.67x = 100,951.46 × 19,919.81
  4. Step 4: Simplify right side
    67,321.67x = 2,010,933,902.42
  5. Step 5: Solve for x
    x = 2,010,933,902.42/67,321.67
  6. Step 6: Final answer
    x = 29,870.53

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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.