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Finding the Fourth Proportional to 81,283.66, 121,960.52 and 33,908.08

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Solution

The fourth proportional to 81,283.66, 121,960.52 and 33,908.08 is: 50,876.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,283.66 : 121,960.52 = 33,908.08 : x
  2. Step 2: Convert to fraction form
    81,283.66/121,960.52 = 33,908.08/x
  3. Step 3: Cross multiply
    81,283.66x = 121,960.52 × 33,908.08
  4. Step 4: Simplify right side
    81,283.66x = 4,135,446,594.56
  5. Step 5: Solve for x
    x = 4,135,446,594.56/81,283.66
  6. Step 6: Final answer
    x = 50,876.73

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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.