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Finding the Fourth Proportional to 43,939.70, 65,920.77 and 12,774.95

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Solution

The fourth proportional to 43,939.70, 65,920.77 and 12,774.95 is: 19,165.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,939.70 : 65,920.77 = 12,774.95 : x
  2. Step 2: Convert to fraction form
    43,939.70/65,920.77 = 12,774.95/x
  3. Step 3: Cross multiply
    43,939.70x = 65,920.77 × 12,774.95
  4. Step 4: Simplify right side
    43,939.70x = 842,134,211.11
  5. Step 5: Solve for x
    x = 842,134,211.11/43,939.70
  6. Step 6: Final answer
    x = 19,165.68

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