Home / 67,121.82-100,676.97-31,574.79

Finding the Fourth Proportional to 67,121.82, 100,676.97 and 31,574.79

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Solution

The fourth proportional to 67,121.82, 100,676.97 and 31,574.79 is: 47,359.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,121.82 : 100,676.97 = 31,574.79 : x
  2. Step 2: Convert to fraction form
    67,121.82/100,676.97 = 31,574.79/x
  3. Step 3: Cross multiply
    67,121.82x = 100,676.97 × 31,574.79
  4. Step 4: Simplify right side
    67,121.82x = 3,178,854,185.59
  5. Step 5: Solve for x
    x = 3,178,854,185.59/67,121.82
  6. Step 6: Final answer
    x = 47,359.48

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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.