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Finding the Fourth Proportional to 93.92, 140.83 and 57.88

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Solution

The fourth proportional to 93.92, 140.83 and 57.88 is: 86.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.92 : 140.83 = 57.88 : x
  2. Step 2: Convert to fraction form
    93.92/140.83 = 57.88/x
  3. Step 3: Cross multiply
    93.92x = 140.83 × 57.88
  4. Step 4: Simplify right side
    93.92x = 8,151.24
  5. Step 5: Solve for x
    x = 8,151.24/93.92
  6. Step 6: Final answer
    x = 86.79

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