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Finding the Fourth Proportional to 54,757.55, 82,136.97 and 21,493.28

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Solution

The fourth proportional to 54,757.55, 82,136.97 and 21,493.28 is: 32,240.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,757.55 : 82,136.97 = 21,493.28 : x
  2. Step 2: Convert to fraction form
    54,757.55/82,136.97 = 21,493.28/x
  3. Step 3: Cross multiply
    54,757.55x = 82,136.97 × 21,493.28
  4. Step 4: Simplify right side
    54,757.55x = 1,765,392,483.88
  5. Step 5: Solve for x
    x = 1,765,392,483.88/54,757.55
  6. Step 6: Final answer
    x = 32,240.17

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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.