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Finding the Fourth Proportional to 85,986.90, 118,658.52 and 47,748.42

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Solution

The fourth proportional to 85,986.90, 118,658.52 and 47,748.42 is: 65,890.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,986.90 : 118,658.52 = 47,748.42 : x
  2. Step 2: Convert to fraction form
    85,986.90/118,658.52 = 47,748.42/x
  3. Step 3: Cross multiply
    85,986.90x = 118,658.52 × 47,748.42
  4. Step 4: Simplify right side
    85,986.90x = 5,665,756,849.54
  5. Step 5: Solve for x
    x = 5,665,756,849.54/85,986.90
  6. Step 6: Final answer
    x = 65,890.93

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