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Finding the Fourth Proportional to 80,871.37, 111,601 and 45,060.61

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Solution

The fourth proportional to 80,871.37, 111,601 and 45,060.61 is: 62,182.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,871.37 : 111,601 = 45,060.61 : x
  2. Step 2: Convert to fraction form
    80,871.37/111,601 = 45,060.61/x
  3. Step 3: Cross multiply
    80,871.37x = 111,601 × 45,060.61
  4. Step 4: Simplify right side
    80,871.37x = 5,028,809,136.61
  5. Step 5: Solve for x
    x = 5,028,809,136.61/80,871.37
  6. Step 6: Final answer
    x = 62,182.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.