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Finding the Fourth Proportional to 79.83, 119.77 and 56.95

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Solution

The fourth proportional to 79.83, 119.77 and 56.95 is: 85.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.83 : 119.77 = 56.95 : x
  2. Step 2: Convert to fraction form
    79.83/119.77 = 56.95/x
  3. Step 3: Cross multiply
    79.83x = 119.77 × 56.95
  4. Step 4: Simplify right side
    79.83x = 6,820.46
  5. Step 5: Solve for x
    x = 6,820.46/79.83
  6. Step 6: Final answer
    x = 85.44

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