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Finding the Fourth Proportional to 43,390.80, 65,086.20 and 15,682.32

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Solution

The fourth proportional to 43,390.80, 65,086.20 and 15,682.32 is: 23,523.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,390.80 : 65,086.20 = 15,682.32 : x
  2. Step 2: Convert to fraction form
    43,390.80/65,086.20 = 15,682.32/x
  3. Step 3: Cross multiply
    43,390.80x = 65,086.20 × 15,682.32
  4. Step 4: Simplify right side
    43,390.80x = 1,020,702,615.98
  5. Step 5: Solve for x
    x = 1,020,702,615.98/43,390.80
  6. Step 6: Final answer
    x = 23,523.48

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