Home / 80,616.89-111,282.31-53,749.59

Finding the Fourth Proportional to 80,616.89, 111,282.31 and 53,749.59

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Solution

The fourth proportional to 80,616.89, 111,282.31 and 53,749.59 is: 74,195.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,616.89 : 111,282.31 = 53,749.59 : x
  2. Step 2: Convert to fraction form
    80,616.89/111,282.31 = 53,749.59/x
  3. Step 3: Cross multiply
    80,616.89x = 111,282.31 × 53,749.59
  4. Step 4: Simplify right side
    80,616.89x = 5,981,378,510.25
  5. Step 5: Solve for x
    x = 5,981,378,510.25/80,616.89
  6. Step 6: Final answer
    x = 74,195.11

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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.