Home / 74,291.28-111,456.36-21,705.36

Finding the Fourth Proportional to 74,291.28, 111,456.36 and 21,705.36

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Solution

The fourth proportional to 74,291.28, 111,456.36 and 21,705.36 is: 32,563.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,291.28 : 111,456.36 = 21,705.36 : x
  2. Step 2: Convert to fraction form
    74,291.28/111,456.36 = 21,705.36/x
  3. Step 3: Cross multiply
    74,291.28x = 111,456.36 × 21,705.36
  4. Step 4: Simplify right side
    74,291.28x = 2,419,200,418.09
  5. Step 5: Solve for x
    x = 2,419,200,418.09/74,291.28
  6. Step 6: Final answer
    x = 32,563.72

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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.