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Finding the Fourth Proportional to 33,228.20, 49,842.30 and 21,418.40

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Solution

The fourth proportional to 33,228.20, 49,842.30 and 21,418.40 is: 32,127.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,228.20 : 49,842.30 = 21,418.40 : x
  2. Step 2: Convert to fraction form
    33,228.20/49,842.30 = 21,418.40/x
  3. Step 3: Cross multiply
    33,228.20x = 49,842.30 × 21,418.40
  4. Step 4: Simplify right side
    33,228.20x = 1,067,542,318.32
  5. Step 5: Solve for x
    x = 1,067,542,318.32/33,228.20
  6. Step 6: Final answer
    x = 32,127.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.