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Finding the Fourth Proportional to 33,420.75, 50,116.14 and 19,918.30

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Solution

The fourth proportional to 33,420.75, 50,116.14 and 19,918.30 is: 29,868.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,420.75 : 50,116.14 = 19,918.30 : x
  2. Step 2: Convert to fraction form
    33,420.75/50,116.14 = 19,918.30/x
  3. Step 3: Cross multiply
    33,420.75x = 50,116.14 × 19,918.30
  4. Step 4: Simplify right side
    33,420.75x = 998,228,311.36
  5. Step 5: Solve for x
    x = 998,228,311.36/33,420.75
  6. Step 6: Final answer
    x = 29,868.52

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1.5x scale

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.