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Finding the Fourth Proportional to 33,188.80, 49,783.20 and 20,900.80

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Solution

The fourth proportional to 33,188.80, 49,783.20 and 20,900.80 is: 31,351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,188.80 : 49,783.20 = 20,900.80 : x
  2. Step 2: Convert to fraction form
    33,188.80/49,783.20 = 20,900.80/x
  3. Step 3: Cross multiply
    33,188.80x = 49,783.20 × 20,900.80
  4. Step 4: Simplify right side
    33,188.80x = 1,040,508,706.56
  5. Step 5: Solve for x
    x = 1,040,508,706.56/33,188.80
  6. Step 6: Final answer
    x = 31,351.20

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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.