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Finding the Fourth Proportional to 111,766.78, 167,661.11 and 40,708.72

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Solution

The fourth proportional to 111,766.78, 167,661.11 and 40,708.72 is: 61,067.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,766.78 : 167,661.11 = 40,708.72 : x
  2. Step 2: Convert to fraction form
    111,766.78/167,661.11 = 40,708.72/x
  3. Step 3: Cross multiply
    111,766.78x = 167,661.11 × 40,708.72
  4. Step 4: Simplify right side
    111,766.78x = 6,825,268,559.18
  5. Step 5: Solve for x
    x = 6,825,268,559.18/111,766.78
  6. Step 6: Final answer
    x = 61,067.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.