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Finding the Fourth Proportional to 68,792.72, 103,189.22 and 18,873.50

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Solution

The fourth proportional to 68,792.72, 103,189.22 and 18,873.50 is: 28,310.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,792.72 : 103,189.22 = 18,873.50 : x
  2. Step 2: Convert to fraction form
    68,792.72/103,189.22 = 18,873.50/x
  3. Step 3: Cross multiply
    68,792.72x = 103,189.22 × 18,873.50
  4. Step 4: Simplify right side
    68,792.72x = 1,947,541,743.67
  5. Step 5: Solve for x
    x = 1,947,541,743.67/68,792.72
  6. Step 6: Final answer
    x = 28,310.29

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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.