Home / 74,380.82-111,572.13-21,791.36

Finding the Fourth Proportional to 74,380.82, 111,572.13 and 21,791.36

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Solution

The fourth proportional to 74,380.82, 111,572.13 and 21,791.36 is: 32,687.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,380.82 : 111,572.13 = 21,791.36 : x
  2. Step 2: Convert to fraction form
    74,380.82/111,572.13 = 21,791.36/x
  3. Step 3: Cross multiply
    74,380.82x = 111,572.13 × 21,791.36
  4. Step 4: Simplify right side
    74,380.82x = 2,431,308,811.44
  5. Step 5: Solve for x
    x = 2,431,308,811.44/74,380.82
  6. Step 6: Final answer
    x = 32,687.31

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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.