Home / 67,127.12-100,676.49-19,729.36

Finding the Fourth Proportional to 67,127.12, 100,676.49 and 19,729.36

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Solution

The fourth proportional to 67,127.12, 100,676.49 and 19,729.36 is: 29,589.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,127.12 : 100,676.49 = 19,729.36 : x
  2. Step 2: Convert to fraction form
    67,127.12/100,676.49 = 19,729.36/x
  3. Step 3: Cross multiply
    67,127.12x = 100,676.49 × 19,729.36
  4. Step 4: Simplify right side
    67,127.12x = 1,986,282,211.36
  5. Step 5: Solve for x
    x = 1,986,282,211.36/67,127.12
  6. Step 6: Final answer
    x = 29,589.86

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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.