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Finding the Fourth Proportional to 111,917.60, 167,876.40 and 45,359.90

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Solution

The fourth proportional to 111,917.60, 167,876.40 and 45,359.90 is: 68,039.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,917.60 : 167,876.40 = 45,359.90 : x
  2. Step 2: Convert to fraction form
    111,917.60/167,876.40 = 45,359.90/x
  3. Step 3: Cross multiply
    111,917.60x = 167,876.40 × 45,359.90
  4. Step 4: Simplify right side
    111,917.60x = 7,614,856,716.36
  5. Step 5: Solve for x
    x = 7,614,856,716.36/111,917.60
  6. Step 6: Final answer
    x = 68,039.85

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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.