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Finding the Fourth Proportional to 81,662.49, 112,691.39 and 49,884.57

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Solution

The fourth proportional to 81,662.49, 112,691.39 and 49,884.57 is: 68,838.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,662.49 : 112,691.39 = 49,884.57 : x
  2. Step 2: Convert to fraction form
    81,662.49/112,691.39 = 49,884.57/x
  3. Step 3: Cross multiply
    81,662.49x = 112,691.39 × 49,884.57
  4. Step 4: Simplify right side
    81,662.49x = 5,621,561,283.43
  5. Step 5: Solve for x
    x = 5,621,561,283.43/81,662.49
  6. Step 6: Final answer
    x = 68,838.96

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