Home / 69,170.40-103,689.18-44,139.78

Finding the Fourth Proportional to 69,170.40, 103,689.18 and 44,139.78

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Solution

The fourth proportional to 69,170.40, 103,689.18 and 44,139.78 is: 66,167.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,170.40 : 103,689.18 = 44,139.78 : x
  2. Step 2: Convert to fraction form
    69,170.40/103,689.18 = 44,139.78/x
  3. Step 3: Cross multiply
    69,170.40x = 103,689.18 × 44,139.78
  4. Step 4: Simplify right side
    69,170.40x = 4,576,817,593.58
  5. Step 5: Solve for x
    x = 4,576,817,593.58/69,170.40
  6. Step 6: Final answer
    x = 66,167.29

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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.