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Finding the Fourth Proportional to 85,969.94, 128,913.43 and 36,036.63

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Solution

The fourth proportional to 85,969.94, 128,913.43 and 36,036.63 is: 54,037.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,969.94 : 128,913.43 = 36,036.63 : x
  2. Step 2: Convert to fraction form
    85,969.94/128,913.43 = 36,036.63/x
  3. Step 3: Cross multiply
    85,969.94x = 128,913.43 × 36,036.63
  4. Step 4: Simplify right side
    85,969.94x = 4,645,605,578.94
  5. Step 5: Solve for x
    x = 4,645,605,578.94/85,969.94
  6. Step 6: Final answer
    x = 54,037.56

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