Home / 80,571.20-111,204.16-51,480.96

Finding the Fourth Proportional to 80,571.20, 111,204.16 and 51,480.96

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Solution

The fourth proportional to 80,571.20, 111,204.16 and 51,480.96 is: 71,053.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,571.20 : 111,204.16 = 51,480.96 : x
  2. Step 2: Convert to fraction form
    80,571.20/111,204.16 = 51,480.96/x
  3. Step 3: Cross multiply
    80,571.20x = 111,204.16 × 51,480.96
  4. Step 4: Simplify right side
    80,571.20x = 5,724,896,912.79
  5. Step 5: Solve for x
    x = 5,724,896,912.79/80,571.20
  6. Step 6: Final answer
    x = 71,053.89

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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.