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Finding the Fourth Proportional to 65,868.58, 90,900.39 and 39,017.08

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Solution

The fourth proportional to 65,868.58, 90,900.39 and 39,017.08 is: 53,844.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,868.58 : 90,900.39 = 39,017.08 : x
  2. Step 2: Convert to fraction form
    65,868.58/90,900.39 = 39,017.08/x
  3. Step 3: Cross multiply
    65,868.58x = 90,900.39 × 39,017.08
  4. Step 4: Simplify right side
    65,868.58x = 3,546,667,788.66
  5. Step 5: Solve for x
    x = 3,546,667,788.66/65,868.58
  6. Step 6: Final answer
    x = 53,844.61

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