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Finding the Fourth Proportional to 252,043.67, 378,065.51 and 74,536.86

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Solution

The fourth proportional to 252,043.67, 378,065.51 and 74,536.86 is: 111,805.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,043.67 : 378,065.51 = 74,536.86 : x
  2. Step 2: Convert to fraction form
    252,043.67/378,065.51 = 74,536.86/x
  3. Step 3: Cross multiply
    252,043.67x = 378,065.51 × 74,536.86
  4. Step 4: Simplify right side
    252,043.67x = 28,179,815,187.65
  5. Step 5: Solve for x
    x = 28,179,815,187.65/252,043.67
  6. Step 6: Final answer
    x = 111,805.29

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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.