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Finding the Fourth Proportional to 80,640.49, 111,287.67 and 44,831.10

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Solution

The fourth proportional to 80,640.49, 111,287.67 and 44,831.10 is: 61,869.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640.49 : 111,287.67 = 44,831.10 : x
  2. Step 2: Convert to fraction form
    80,640.49/111,287.67 = 44,831.10/x
  3. Step 3: Cross multiply
    80,640.49x = 111,287.67 × 44,831.10
  4. Step 4: Simplify right side
    80,640.49x = 4,989,148,662.54
  5. Step 5: Solve for x
    x = 4,989,148,662.54/80,640.49
  6. Step 6: Final answer
    x = 61,869.03

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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.