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Finding the Fourth Proportional to 97.76, 134.95 and 58.40

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Solution

The fourth proportional to 97.76, 134.95 and 58.40 is: 80.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.76 : 134.95 = 58.40 : x
  2. Step 2: Convert to fraction form
    97.76/134.95 = 58.40/x
  3. Step 3: Cross multiply
    97.76x = 134.95 × 58.40
  4. Step 4: Simplify right side
    97.76x = 7,881.08
  5. Step 5: Solve for x
    x = 7,881.08/97.76
  6. Step 6: Final answer
    x = 80.62

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