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Finding the Fourth Proportional to 81,479.70, 122,183.10 and 37,083.60

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Solution

The fourth proportional to 81,479.70, 122,183.10 and 37,083.60 is: 55,608.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,479.70 : 122,183.10 = 37,083.60 : x
  2. Step 2: Convert to fraction form
    81,479.70/122,183.10 = 37,083.60/x
  3. Step 3: Cross multiply
    81,479.70x = 122,183.10 × 37,083.60
  4. Step 4: Simplify right side
    81,479.70x = 4,530,989,207.16
  5. Step 5: Solve for x
    x = 4,530,989,207.16/81,479.70
  6. Step 6: Final answer
    x = 55,608.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.