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Finding the Fourth Proportional to 76.10, 114 and 73.40

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Solution

The fourth proportional to 76.10, 114 and 73.40 is: 109.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76.10 : 114 = 73.40 : x
  2. Step 2: Convert to fraction form
    76.10/114 = 73.40/x
  3. Step 3: Cross multiply
    76.10x = 114 × 73.40
  4. Step 4: Simplify right side
    76.10x = 8,367.60
  5. Step 5: Solve for x
    x = 8,367.60/76.10
  6. Step 6: Final answer
    x = 109.96

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