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Finding the Fourth Proportional to 82,062.44, 113,721.83 and 80,487.56

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Solution

The fourth proportional to 82,062.44, 113,721.83 and 80,487.56 is: 111,539.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,062.44 : 113,721.83 = 80,487.56 : x
  2. Step 2: Convert to fraction form
    82,062.44/113,721.83 = 80,487.56/x
  3. Step 3: Cross multiply
    82,062.44x = 113,721.83 × 80,487.56
  4. Step 4: Simplify right side
    82,062.44x = 9,153,192,615.43
  5. Step 5: Solve for x
    x = 9,153,192,615.43/82,062.44
  6. Step 6: Final answer
    x = 111,539.37

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.