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Finding the Fourth Proportional to 85,487.50, 117,972.80 and 47,761.75

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Solution

The fourth proportional to 85,487.50, 117,972.80 and 47,761.75 is: 65,911.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,487.50 : 117,972.80 = 47,761.75 : x
  2. Step 2: Convert to fraction form
    85,487.50/117,972.80 = 47,761.75/x
  3. Step 3: Cross multiply
    85,487.50x = 117,972.80 × 47,761.75
  4. Step 4: Simplify right side
    85,487.50x = 5,634,587,380.40
  5. Step 5: Solve for x
    x = 5,634,587,380.40/85,487.50
  6. Step 6: Final answer
    x = 65,911.24

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