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Finding the Fourth Proportional to 81,936.68, 122,901.92 and 33,904

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Solution

The fourth proportional to 81,936.68, 122,901.92 and 33,904 is: 50,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,936.68 : 122,901.92 = 33,904 : x
  2. Step 2: Convert to fraction form
    81,936.68/122,901.92 = 33,904/x
  3. Step 3: Cross multiply
    81,936.68x = 122,901.92 × 33,904
  4. Step 4: Simplify right side
    81,936.68x = 4,166,866,695.68
  5. Step 5: Solve for x
    x = 4,166,866,695.68/81,936.68
  6. Step 6: Final answer
    x = 50,854.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.