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Finding the Fourth Proportional to 33,170.40, 49,690.80 and 19,983.60

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Solution

The fourth proportional to 33,170.40, 49,690.80 and 19,983.60 is: 29,936.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,170.40 : 49,690.80 = 19,983.60 : x
  2. Step 2: Convert to fraction form
    33,170.40/49,690.80 = 19,983.60/x
  3. Step 3: Cross multiply
    33,170.40x = 49,690.80 × 19,983.60
  4. Step 4: Simplify right side
    33,170.40x = 993,001,070.88
  5. Step 5: Solve for x
    x = 993,001,070.88/33,170.40
  6. Step 6: Final answer
    x = 29,936.36

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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.