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Finding the Fourth Proportional to 81,659.65, 112,456.99 and 73,524.01

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Solution

The fourth proportional to 81,659.65, 112,456.99 and 73,524.01 is: 101,253.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,659.65 : 112,456.99 = 73,524.01 : x
  2. Step 2: Convert to fraction form
    81,659.65/112,456.99 = 73,524.01/x
  3. Step 3: Cross multiply
    81,659.65x = 112,456.99 × 73,524.01
  4. Step 4: Simplify right side
    81,659.65x = 8,268,288,857.33
  5. Step 5: Solve for x
    x = 8,268,288,857.33/81,659.65
  6. Step 6: Final answer
    x = 101,253.05

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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.