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Finding the Fourth Proportional to 68,481.98, 94,514.52 and 39,409.75

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Solution

The fourth proportional to 68,481.98, 94,514.52 and 39,409.75 is: 54,390.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,481.98 : 94,514.52 = 39,409.75 : x
  2. Step 2: Convert to fraction form
    68,481.98/94,514.52 = 39,409.75/x
  3. Step 3: Cross multiply
    68,481.98x = 94,514.52 × 39,409.75
  4. Step 4: Simplify right side
    68,481.98x = 3,724,792,934.95
  5. Step 5: Solve for x
    x = 3,724,792,934.95/68,481.98
  6. Step 6: Final answer
    x = 54,390.85

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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.