Home / 81,121.14-111,936.04-45,306.58

Finding the Fourth Proportional to 81,121.14, 111,936.04 and 45,306.58

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Solution

The fourth proportional to 81,121.14, 111,936.04 and 45,306.58 is: 62,516.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,121.14 : 111,936.04 = 45,306.58 : x
  2. Step 2: Convert to fraction form
    81,121.14/111,936.04 = 45,306.58/x
  3. Step 3: Cross multiply
    81,121.14x = 111,936.04 × 45,306.58
  4. Step 4: Simplify right side
    81,121.14x = 5,071,439,151.14
  5. Step 5: Solve for x
    x = 5,071,439,151.14/81,121.14
  6. Step 6: Final answer
    x = 62,516.86

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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.