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Finding the Fourth Proportional to 73,286.29, 109,935.92 and 39,992.05

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Solution

The fourth proportional to 73,286.29, 109,935.92 and 39,992.05 is: 59,991.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,286.29 : 109,935.92 = 39,992.05 : x
  2. Step 2: Convert to fraction form
    73,286.29/109,935.92 = 39,992.05/x
  3. Step 3: Cross multiply
    73,286.29x = 109,935.92 × 39,992.05
  4. Step 4: Simplify right side
    73,286.29x = 4,396,562,809.44
  5. Step 5: Solve for x
    x = 4,396,562,809.44/73,286.29
  6. Step 6: Final answer
    x = 59,991.61

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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.