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Finding the Fourth Proportional to 90.05, 135.03 and 35.92

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Solution

The fourth proportional to 90.05, 135.03 and 35.92 is: 53.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90.05 : 135.03 = 35.92 : x
  2. Step 2: Convert to fraction form
    90.05/135.03 = 35.92/x
  3. Step 3: Cross multiply
    90.05x = 135.03 × 35.92
  4. Step 4: Simplify right side
    90.05x = 4,849.60
  5. Step 5: Solve for x
    x = 4,849.60/90.05
  6. Step 6: Final answer
    x = 53.85

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