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Finding the Fourth Proportional to 86,656.75, 129,985.14 and 31,252.75

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Solution

The fourth proportional to 86,656.75, 129,985.14 and 31,252.75 is: 46,879.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,656.75 : 129,985.14 = 31,252.75 : x
  2. Step 2: Convert to fraction form
    86,656.75/129,985.14 = 31,252.75/x
  3. Step 3: Cross multiply
    86,656.75x = 129,985.14 × 31,252.75
  4. Step 4: Simplify right side
    86,656.75x = 4,062,393,084.14
  5. Step 5: Solve for x
    x = 4,062,393,084.14/86,656.75
  6. Step 6: Final answer
    x = 46,879.13

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