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Finding the Fourth Proportional to 68,793.45, 103,183.23 and 18,878.58

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Solution

The fourth proportional to 68,793.45, 103,183.23 and 18,878.58 is: 28,315.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,793.45 : 103,183.23 = 18,878.58 : x
  2. Step 2: Convert to fraction form
    68,793.45/103,183.23 = 18,878.58/x
  3. Step 3: Cross multiply
    68,793.45x = 103,183.23 × 18,878.58
  4. Step 4: Simplify right side
    68,793.45x = 1,947,952,862.21
  5. Step 5: Solve for x
    x = 1,947,952,862.21/68,793.45
  6. Step 6: Final answer
    x = 28,315.96

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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.