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Finding the Fourth Proportional to 57,452.60, 86,178.92 and 18,012.78

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Solution

The fourth proportional to 57,452.60, 86,178.92 and 18,012.78 is: 27,019.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,452.60 : 86,178.92 = 18,012.78 : x
  2. Step 2: Convert to fraction form
    57,452.60/86,178.92 = 18,012.78/x
  3. Step 3: Cross multiply
    57,452.60x = 86,178.92 × 18,012.78
  4. Step 4: Simplify right side
    57,452.60x = 1,552,322,097.01
  5. Step 5: Solve for x
    x = 1,552,322,097.01/57,452.60
  6. Step 6: Final answer
    x = 27,019.18

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1.5x scale

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.