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Finding the Fourth Proportional to 68,668.31, 94,751.61 and 38,454.90

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Solution

The fourth proportional to 68,668.31, 94,751.61 and 38,454.90 is: 53,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,668.31 : 94,751.61 = 38,454.90 : x
  2. Step 2: Convert to fraction form
    68,668.31/94,751.61 = 38,454.90/x
  3. Step 3: Cross multiply
    68,668.31x = 94,751.61 × 38,454.90
  4. Step 4: Simplify right side
    68,668.31x = 3,643,663,687.39
  5. Step 5: Solve for x
    x = 3,643,663,687.39/68,668.31
  6. Step 6: Final answer
    x = 53,061.80

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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.