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Finding the Fourth Proportional to 71.31, 106.83 and 59.97

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Solution

The fourth proportional to 71.31, 106.83 and 59.97 is: 89.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.31 : 106.83 = 59.97 : x
  2. Step 2: Convert to fraction form
    71.31/106.83 = 59.97/x
  3. Step 3: Cross multiply
    71.31x = 106.83 × 59.97
  4. Step 4: Simplify right side
    71.31x = 6,406.60
  5. Step 5: Solve for x
    x = 6,406.60/71.31
  6. Step 6: Final answer
    x = 89.84

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