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Finding the Fourth Proportional to 68,879.44, 95,053.50 and 38,664.78

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Solution

The fourth proportional to 68,879.44, 95,053.50 and 38,664.78 is: 53,357.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,879.44 : 95,053.50 = 38,664.78 : x
  2. Step 2: Convert to fraction form
    68,879.44/95,053.50 = 38,664.78/x
  3. Step 3: Cross multiply
    68,879.44x = 95,053.50 × 38,664.78
  4. Step 4: Simplify right side
    68,879.44x = 3,675,222,665.73
  5. Step 5: Solve for x
    x = 3,675,222,665.73/68,879.44
  6. Step 6: Final answer
    x = 53,357.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.