Home / 68,754.08-103,131.21-18,834.61

Finding the Fourth Proportional to 68,754.08, 103,131.21 and 18,834.61

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Solution

The fourth proportional to 68,754.08, 103,131.21 and 18,834.61 is: 28,251.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,754.08 : 103,131.21 = 18,834.61 : x
  2. Step 2: Convert to fraction form
    68,754.08/103,131.21 = 18,834.61/x
  3. Step 3: Cross multiply
    68,754.08x = 103,131.21 × 18,834.61
  4. Step 4: Simplify right side
    68,754.08x = 1,942,436,212.78
  5. Step 5: Solve for x
    x = 1,942,436,212.78/68,754.08
  6. Step 6: Final answer
    x = 28,251.94

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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.