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Finding the Fourth Proportional to 33,811.20, 50,716.80 and 19,756.80

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Solution

The fourth proportional to 33,811.20, 50,716.80 and 19,756.80 is: 29,635.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,811.20 : 50,716.80 = 19,756.80 : x
  2. Step 2: Convert to fraction form
    33,811.20/50,716.80 = 19,756.80/x
  3. Step 3: Cross multiply
    33,811.20x = 50,716.80 × 19,756.80
  4. Step 4: Simplify right side
    33,811.20x = 1,002,001,674.24
  5. Step 5: Solve for x
    x = 1,002,001,674.24/33,811.20
  6. Step 6: Final answer
    x = 29,635.20

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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.