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Finding the Fourth Proportional to 68,761, 94,891.62 and 38,953

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Solution

The fourth proportional to 68,761, 94,891.62 and 38,953 is: 53,755.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,761 : 94,891.62 = 38,953 : x
  2. Step 2: Convert to fraction form
    68,761/94,891.62 = 38,953/x
  3. Step 3: Cross multiply
    68,761x = 94,891.62 × 38,953
  4. Step 4: Simplify right side
    68,761x = 3,696,313,273.86
  5. Step 5: Solve for x
    x = 3,696,313,273.86/68,761
  6. Step 6: Final answer
    x = 53,755.96

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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.