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Finding the Fourth Proportional to 89.82, 134.60 and 51.32

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Solution

The fourth proportional to 89.82, 134.60 and 51.32 is: 76.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.82 : 134.60 = 51.32 : x
  2. Step 2: Convert to fraction form
    89.82/134.60 = 51.32/x
  3. Step 3: Cross multiply
    89.82x = 134.60 × 51.32
  4. Step 4: Simplify right side
    89.82x = 6,907.67
  5. Step 5: Solve for x
    x = 6,907.67/89.82
  6. Step 6: Final answer
    x = 76.91

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