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Finding the Fourth Proportional to 81,113.96, 111,936.10 and 45,304.49

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Solution

The fourth proportional to 81,113.96, 111,936.10 and 45,304.49 is: 62,519.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,113.96 : 111,936.10 = 45,304.49 : x
  2. Step 2: Convert to fraction form
    81,113.96/111,936.10 = 45,304.49/x
  3. Step 3: Cross multiply
    81,113.96x = 111,936.10 × 45,304.49
  4. Step 4: Simplify right side
    81,113.96x = 5,071,207,923.09
  5. Step 5: Solve for x
    x = 5,071,207,923.09/81,113.96
  6. Step 6: Final answer
    x = 62,519.55

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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.