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Finding the Fourth Proportional to 68,387.78, 102,586.59 and 26,267.88

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Solution

The fourth proportional to 68,387.78, 102,586.59 and 26,267.88 is: 39,403.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,387.78 : 102,586.59 = 26,267.88 : x
  2. Step 2: Convert to fraction form
    68,387.78/102,586.59 = 26,267.88/x
  3. Step 3: Cross multiply
    68,387.78x = 102,586.59 × 26,267.88
  4. Step 4: Simplify right side
    68,387.78x = 2,694,732,235.73
  5. Step 5: Solve for x
    x = 2,694,732,235.73/68,387.78
  6. Step 6: Final answer
    x = 39,403.71

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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.