Home / 68,780.28-103,161.27-31,299.96

Finding the Fourth Proportional to 68,780.28, 103,161.27 and 31,299.96

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Solution

The fourth proportional to 68,780.28, 103,161.27 and 31,299.96 is: 46,945.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,780.28 : 103,161.27 = 31,299.96 : x
  2. Step 2: Convert to fraction form
    68,780.28/103,161.27 = 31,299.96/x
  3. Step 3: Cross multiply
    68,780.28x = 103,161.27 × 31,299.96
  4. Step 4: Simplify right side
    68,780.28x = 3,228,943,624.55
  5. Step 5: Solve for x
    x = 3,228,943,624.55/68,780.28
  6. Step 6: Final answer
    x = 46,945.78

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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.