Home / 81,116.62-121,718.61-33,764.43

Finding the Fourth Proportional to 81,116.62, 121,718.61 and 33,764.43

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Solution

The fourth proportional to 81,116.62, 121,718.61 and 33,764.43 is: 50,664.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,116.62 : 121,718.61 = 33,764.43 : x
  2. Step 2: Convert to fraction form
    81,116.62/121,718.61 = 33,764.43/x
  3. Step 3: Cross multiply
    81,116.62x = 121,718.61 × 33,764.43
  4. Step 4: Simplify right side
    81,116.62x = 4,109,759,487.04
  5. Step 5: Solve for x
    x = 4,109,759,487.04/81,116.62
  6. Step 6: Final answer
    x = 50,664.83

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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.