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Finding the Fourth Proportional to 54,997.60, 82,480.20 and 21,706.60

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Solution

The fourth proportional to 54,997.60, 82,480.20 and 21,706.60 is: 32,553.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,997.60 : 82,480.20 = 21,706.60 : x
  2. Step 2: Convert to fraction form
    54,997.60/82,480.20 = 21,706.60/x
  3. Step 3: Cross multiply
    54,997.60x = 82,480.20 × 21,706.60
  4. Step 4: Simplify right side
    54,997.60x = 1,790,364,709.32
  5. Step 5: Solve for x
    x = 1,790,364,709.32/54,997.60
  6. Step 6: Final answer
    x = 32,553.51

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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.