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Finding the Fourth Proportional to 81,768.80, 112,839.60 and 45,468.80

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Solution

The fourth proportional to 81,768.80, 112,839.60 and 45,468.80 is: 62,746.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,768.80 : 112,839.60 = 45,468.80 : x
  2. Step 2: Convert to fraction form
    81,768.80/112,839.60 = 45,468.80/x
  3. Step 3: Cross multiply
    81,768.80x = 112,839.60 × 45,468.80
  4. Step 4: Simplify right side
    81,768.80x = 5,130,681,204.48
  5. Step 5: Solve for x
    x = 5,130,681,204.48/81,768.80
  6. Step 6: Final answer
    x = 62,746.20

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