Home / 67,126.87-100,676.12-19,729.10

Finding the Fourth Proportional to 67,126.87, 100,676.12 and 19,729.10

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Solution

The fourth proportional to 67,126.87, 100,676.12 and 19,729.10 is: 29,589.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,126.87 : 100,676.12 = 19,729.10 : x
  2. Step 2: Convert to fraction form
    67,126.87/100,676.12 = 19,729.10/x
  3. Step 3: Cross multiply
    67,126.87x = 100,676.12 × 19,729.10
  4. Step 4: Simplify right side
    67,126.87x = 1,986,249,239.09
  5. Step 5: Solve for x
    x = 1,986,249,239.09/67,126.87
  6. Step 6: Final answer
    x = 29,589.48

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1.5x scale

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.