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Finding the Fourth Proportional to 68,843.96, 103,194.90 and 28,886.15

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Solution

The fourth proportional to 68,843.96, 103,194.90 and 28,886.15 is: 43,299.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,843.96 : 103,194.90 = 28,886.15 : x
  2. Step 2: Convert to fraction form
    68,843.96/103,194.90 = 28,886.15/x
  3. Step 3: Cross multiply
    68,843.96x = 103,194.90 × 28,886.15
  4. Step 4: Simplify right side
    68,843.96x = 2,980,903,618.62
  5. Step 5: Solve for x
    x = 2,980,903,618.62/68,843.96
  6. Step 6: Final answer
    x = 43,299.42

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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.