Home / 81,759.42-112,831.14-49,942.62

Finding the Fourth Proportional to 81,759.42, 112,831.14 and 49,942.62

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Solution

The fourth proportional to 81,759.42, 112,831.14 and 49,942.62 is: 68,922.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,759.42 : 112,831.14 = 49,942.62 : x
  2. Step 2: Convert to fraction form
    81,759.42/112,831.14 = 49,942.62/x
  3. Step 3: Cross multiply
    81,759.42x = 112,831.14 × 49,942.62
  4. Step 4: Simplify right side
    81,759.42x = 5,635,082,749.19
  5. Step 5: Solve for x
    x = 5,635,082,749.19/81,759.42
  6. Step 6: Final answer
    x = 68,922.73

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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.