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Finding the Fourth Proportional to 43,720.80, 65,588.64 and 14,135.04

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Solution

The fourth proportional to 43,720.80, 65,588.64 and 14,135.04 is: 21,204.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,720.80 : 65,588.64 = 14,135.04 : x
  2. Step 2: Convert to fraction form
    43,720.80/65,588.64 = 14,135.04/x
  3. Step 3: Cross multiply
    43,720.80x = 65,588.64 × 14,135.04
  4. Step 4: Simplify right side
    43,720.80x = 927,098,049.95
  5. Step 5: Solve for x
    x = 927,098,049.95/43,720.80
  6. Step 6: Final answer
    x = 21,204.97

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