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Finding the Fourth Proportional to 33,990.66, 50,942.86 and 19,207.86

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Solution

The fourth proportional to 33,990.66, 50,942.86 and 19,207.86 is: 28,787.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,990.66 : 50,942.86 = 19,207.86 : x
  2. Step 2: Convert to fraction form
    33,990.66/50,942.86 = 19,207.86/x
  3. Step 3: Cross multiply
    33,990.66x = 50,942.86 × 19,207.86
  4. Step 4: Simplify right side
    33,990.66x = 978,503,382.90
  5. Step 5: Solve for x
    x = 978,503,382.90/33,990.66
  6. Step 6: Final answer
    x = 28,787.42

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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.