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Finding the Fourth Proportional to 68,668.90, 94,765.77 and 38,453.95

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Solution

The fourth proportional to 68,668.90, 94,765.77 and 38,453.95 is: 53,067.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,668.90 : 94,765.77 = 38,453.95 : x
  2. Step 2: Convert to fraction form
    68,668.90/94,765.77 = 38,453.95/x
  3. Step 3: Cross multiply
    68,668.90x = 94,765.77 × 38,453.95
  4. Step 4: Simplify right side
    68,668.90x = 3,644,118,181.29
  5. Step 5: Solve for x
    x = 3,644,118,181.29/68,668.90
  6. Step 6: Final answer
    x = 53,067.96

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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.