Home / 80,640.42-111,286.38-44,831.94

Finding the Fourth Proportional to 80,640.42, 111,286.38 and 44,831.94

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Solution

The fourth proportional to 80,640.42, 111,286.38 and 44,831.94 is: 61,869.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640.42 : 111,286.38 = 44,831.94 : x
  2. Step 2: Convert to fraction form
    80,640.42/111,286.38 = 44,831.94/x
  3. Step 3: Cross multiply
    80,640.42x = 111,286.38 × 44,831.94
  4. Step 4: Simplify right side
    80,640.42x = 4,989,184,310.98
  5. Step 5: Solve for x
    x = 4,989,184,310.98/80,640.42
  6. Step 6: Final answer
    x = 61,869.52

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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.