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Finding the Fourth Proportional to 91.88, 137.82 and 56.04

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Solution

The fourth proportional to 91.88, 137.82 and 56.04 is: 84.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.88 : 137.82 = 56.04 : x
  2. Step 2: Convert to fraction form
    91.88/137.82 = 56.04/x
  3. Step 3: Cross multiply
    91.88x = 137.82 × 56.04
  4. Step 4: Simplify right side
    91.88x = 7,723.43
  5. Step 5: Solve for x
    x = 7,723.43/91.88
  6. Step 6: Final answer
    x = 84.06

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