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Finding the Fourth Proportional to 77,280.88, 115,842.90 and 43,932.04

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Solution

The fourth proportional to 77,280.88, 115,842.90 and 43,932.04 is: 65,853.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,280.88 : 115,842.90 = 43,932.04 : x
  2. Step 2: Convert to fraction form
    77,280.88/115,842.90 = 43,932.04/x
  3. Step 3: Cross multiply
    77,280.88x = 115,842.90 × 43,932.04
  4. Step 4: Simplify right side
    77,280.88x = 5,089,214,117.64
  5. Step 5: Solve for x
    x = 5,089,214,117.64/77,280.88
  6. Step 6: Final answer
    x = 65,853.47

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