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Finding the Fourth Proportional to 57,017.70, 85,491.01 and 21,949.15

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Solution

The fourth proportional to 57,017.70, 85,491.01 and 21,949.15 is: 32,910.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,017.70 : 85,491.01 = 21,949.15 : x
  2. Step 2: Convert to fraction form
    57,017.70/85,491.01 = 21,949.15/x
  3. Step 3: Cross multiply
    57,017.70x = 85,491.01 × 21,949.15
  4. Step 4: Simplify right side
    57,017.70x = 1,876,455,002.14
  5. Step 5: Solve for x
    x = 1,876,455,002.14/57,017.70
  6. Step 6: Final answer
    x = 32,910.04

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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.