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Finding the Fourth Proportional to 65.98, 91 and 47.56

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Solution

The fourth proportional to 65.98, 91 and 47.56 is: 65.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.98 : 91 = 47.56 : x
  2. Step 2: Convert to fraction form
    65.98/91 = 47.56/x
  3. Step 3: Cross multiply
    65.98x = 91 × 47.56
  4. Step 4: Simplify right side
    65.98x = 4,327.96
  5. Step 5: Solve for x
    x = 4,327.96/65.98
  6. Step 6: Final answer
    x = 65.60

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