Home / 68,839.30-103,217.40-30,881.65

Finding the Fourth Proportional to 68,839.30, 103,217.40 and 30,881.65

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Solution

The fourth proportional to 68,839.30, 103,217.40 and 30,881.65 is: 46,303.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,839.30 : 103,217.40 = 30,881.65 : x
  2. Step 2: Convert to fraction form
    68,839.30/103,217.40 = 30,881.65/x
  3. Step 3: Cross multiply
    68,839.30x = 103,217.40 × 30,881.65
  4. Step 4: Simplify right side
    68,839.30x = 3,187,523,104.62
  5. Step 5: Solve for x
    x = 3,187,523,104.62/68,839.30
  6. Step 6: Final answer
    x = 46,303.83

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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.