Home / 67,231.29-100,823.31-19,833.78

Finding the Fourth Proportional to 67,231.29, 100,823.31 and 19,833.78

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Solution

The fourth proportional to 67,231.29, 100,823.31 and 19,833.78 is: 29,743.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,231.29 : 100,823.31 = 19,833.78 : x
  2. Step 2: Convert to fraction form
    67,231.29/100,823.31 = 19,833.78/x
  3. Step 3: Cross multiply
    67,231.29x = 100,823.31 × 19,833.78
  4. Step 4: Simplify right side
    67,231.29x = 1,999,707,349.41
  5. Step 5: Solve for x
    x = 1,999,707,349.41/67,231.29
  6. Step 6: Final answer
    x = 29,743.70

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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.