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Finding the Fourth Proportional to 57, 78.66 and 37.59

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Solution

The fourth proportional to 57, 78.66 and 37.59 is: 51.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57 : 78.66 = 37.59 : x
  2. Step 2: Convert to fraction form
    57/78.66 = 37.59/x
  3. Step 3: Cross multiply
    57x = 78.66 × 37.59
  4. Step 4: Simplify right side
    57x = 2,956.83
  5. Step 5: Solve for x
    x = 2,956.83/57
  6. Step 6: Final answer
    x = 51.87

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