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Finding the Fourth Proportional to 115,016.61, 172,567.75 and 51,817.78

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Solution

The fourth proportional to 115,016.61, 172,567.75 and 51,817.78 is: 77,745.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,016.61 : 172,567.75 = 51,817.78 : x
  2. Step 2: Convert to fraction form
    115,016.61/172,567.75 = 51,817.78/x
  3. Step 3: Cross multiply
    115,016.61x = 172,567.75 × 51,817.78
  4. Step 4: Simplify right side
    115,016.61x = 8,942,077,704.60
  5. Step 5: Solve for x
    x = 8,942,077,704.60/115,016.61
  6. Step 6: Final answer
    x = 77,745.97

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