Home / 81,079.89-121,619.83-41,092.65

Finding the Fourth Proportional to 81,079.89, 121,619.83 and 41,092.65

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Solution

The fourth proportional to 81,079.89, 121,619.83 and 41,092.65 is: 61,638.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,079.89 : 121,619.83 = 41,092.65 : x
  2. Step 2: Convert to fraction form
    81,079.89/121,619.83 = 41,092.65/x
  3. Step 3: Cross multiply
    81,079.89x = 121,619.83 × 41,092.65
  4. Step 4: Simplify right side
    81,079.89x = 4,997,681,107.25
  5. Step 5: Solve for x
    x = 4,997,681,107.25/81,079.89
  6. Step 6: Final answer
    x = 61,638.97

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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.