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Finding the Fourth Proportional to 57,512.64, 86,269.62 and 18,069.68

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Solution

The fourth proportional to 57,512.64, 86,269.62 and 18,069.68 is: 27,104.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,512.64 : 86,269.62 = 18,069.68 : x
  2. Step 2: Convert to fraction form
    57,512.64/86,269.62 = 18,069.68/x
  3. Step 3: Cross multiply
    57,512.64x = 86,269.62 × 18,069.68
  4. Step 4: Simplify right side
    57,512.64x = 1,558,864,427.12
  5. Step 5: Solve for x
    x = 1,558,864,427.12/57,512.64
  6. Step 6: Final answer
    x = 27,104.73

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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.