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Finding the Fourth Proportional to 81,786.76, 122,680.13 and 26,382.76

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Solution

The fourth proportional to 81,786.76, 122,680.13 and 26,382.76 is: 39,574.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,786.76 : 122,680.13 = 26,382.76 : x
  2. Step 2: Convert to fraction form
    81,786.76/122,680.13 = 26,382.76/x
  3. Step 3: Cross multiply
    81,786.76x = 122,680.13 × 26,382.76
  4. Step 4: Simplify right side
    81,786.76x = 3,236,640,426.56
  5. Step 5: Solve for x
    x = 3,236,640,426.56/81,786.76
  6. Step 6: Final answer
    x = 39,574.14

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Similar ratio
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1.5x scale

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.