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Finding the Fourth Proportional to 68,269.31, 102,392.99 and 28,821.29

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Solution

The fourth proportional to 68,269.31, 102,392.99 and 28,821.29 is: 43,227.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,269.31 : 102,392.99 = 28,821.29 : x
  2. Step 2: Convert to fraction form
    68,269.31/102,392.99 = 28,821.29/x
  3. Step 3: Cross multiply
    68,269.31x = 102,392.99 × 28,821.29
  4. Step 4: Simplify right side
    68,269.31x = 2,951,098,293.65
  5. Step 5: Solve for x
    x = 2,951,098,293.65/68,269.31
  6. Step 6: Final answer
    x = 43,227.31

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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.