Home / 67,129.85-100,689.45-39,031.97

Finding the Fourth Proportional to 67,129.85, 100,689.45 and 39,031.97

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Solution

The fourth proportional to 67,129.85, 100,689.45 and 39,031.97 is: 58,544.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,129.85 : 100,689.45 = 39,031.97 : x
  2. Step 2: Convert to fraction form
    67,129.85/100,689.45 = 39,031.97/x
  3. Step 3: Cross multiply
    67,129.85x = 100,689.45 × 39,031.97
  4. Step 4: Simplify right side
    67,129.85x = 3,930,107,088.27
  5. Step 5: Solve for x
    x = 3,930,107,088.27/67,129.85
  6. Step 6: Final answer
    x = 58,544.86

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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.