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Finding the Fourth Proportional to 57,287.88, 85,936.43 and 21,766.22

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Solution

The fourth proportional to 57,287.88, 85,936.43 and 21,766.22 is: 32,651.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,287.88 : 85,936.43 = 21,766.22 : x
  2. Step 2: Convert to fraction form
    57,287.88/85,936.43 = 21,766.22/x
  3. Step 3: Cross multiply
    57,287.88x = 85,936.43 × 21,766.22
  4. Step 4: Simplify right side
    57,287.88x = 1,870,511,188.39
  5. Step 5: Solve for x
    x = 1,870,511,188.39/57,287.88
  6. Step 6: Final answer
    x = 32,651.08

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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.