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Finding the Fourth Proportional to 84,912, 126,471.04 and 80,471.04

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Solution

The fourth proportional to 84,912, 126,471.04 and 80,471.04 is: 119,856.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,912 : 126,471.04 = 80,471.04 : x
  2. Step 2: Convert to fraction form
    84,912/126,471.04 = 80,471.04/x
  3. Step 3: Cross multiply
    84,912x = 126,471.04 × 80,471.04
  4. Step 4: Simplify right side
    84,912x = 10,177,256,118.68
  5. Step 5: Solve for x
    x = 10,177,256,118.68/84,912
  6. Step 6: Final answer
    x = 119,856.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.