Home / 80,640.59-111,287.82-44,831.21

Finding the Fourth Proportional to 80,640.59, 111,287.82 and 44,831.21

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Solution

The fourth proportional to 80,640.59, 111,287.82 and 44,831.21 is: 61,869.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640.59 : 111,287.82 = 44,831.21 : x
  2. Step 2: Convert to fraction form
    80,640.59/111,287.82 = 44,831.21/x
  3. Step 3: Cross multiply
    80,640.59x = 111,287.82 × 44,831.21
  4. Step 4: Simplify right side
    80,640.59x = 4,989,167,072.42
  5. Step 5: Solve for x
    x = 4,989,167,072.42/80,640.59
  6. Step 6: Final answer
    x = 61,869.18

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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.