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Finding the Fourth Proportional to 33,081.60, 49,564.80 and 21,388.80

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Solution

The fourth proportional to 33,081.60, 49,564.80 and 21,388.80 is: 32,045.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,081.60 : 49,564.80 = 21,388.80 : x
  2. Step 2: Convert to fraction form
    33,081.60/49,564.80 = 21,388.80/x
  3. Step 3: Cross multiply
    33,081.60x = 49,564.80 × 21,388.80
  4. Step 4: Simplify right side
    33,081.60x = 1,060,131,594.24
  5. Step 5: Solve for x
    x = 1,060,131,594.24/33,081.60
  6. Step 6: Final answer
    x = 32,045.96

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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.