Home / 74,128.28-111,198.60-21,537.78

Finding the Fourth Proportional to 74,128.28, 111,198.60 and 21,537.78

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Solution

The fourth proportional to 74,128.28, 111,198.60 and 21,537.78 is: 32,308.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,128.28 : 111,198.60 = 21,537.78 : x
  2. Step 2: Convert to fraction form
    74,128.28/111,198.60 = 21,537.78/x
  3. Step 3: Cross multiply
    74,128.28x = 111,198.60 × 21,537.78
  4. Step 4: Simplify right side
    74,128.28x = 2,394,970,983.11
  5. Step 5: Solve for x
    x = 2,394,970,983.11/74,128.28
  6. Step 6: Final answer
    x = 32,308.47

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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.