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Finding the Fourth Proportional to 47.10, 64.95 and 36.18

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Solution

The fourth proportional to 47.10, 64.95 and 36.18 is: 49.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.10 : 64.95 = 36.18 : x
  2. Step 2: Convert to fraction form
    47.10/64.95 = 36.18/x
  3. Step 3: Cross multiply
    47.10x = 64.95 × 36.18
  4. Step 4: Simplify right side
    47.10x = 2,349.89
  5. Step 5: Solve for x
    x = 2,349.89/47.10
  6. Step 6: Final answer
    x = 49.89

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