Home / 68,755.08-103,132.71-18,835.61

Finding the Fourth Proportional to 68,755.08, 103,132.71 and 18,835.61

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Solution

The fourth proportional to 68,755.08, 103,132.71 and 18,835.61 is: 28,253.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,755.08 : 103,132.71 = 18,835.61 : x
  2. Step 2: Convert to fraction form
    68,755.08/103,132.71 = 18,835.61/x
  3. Step 3: Cross multiply
    68,755.08x = 103,132.71 × 18,835.61
  4. Step 4: Simplify right side
    68,755.08x = 1,942,567,503.80
  5. Step 5: Solve for x
    x = 1,942,567,503.80/68,755.08
  6. Step 6: Final answer
    x = 28,253.44

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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.