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Finding the Fourth Proportional to 115,643.43, 173,449.62 and 31,409.28

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Solution

The fourth proportional to 115,643.43, 173,449.62 and 31,409.28 is: 47,109.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,643.43 : 173,449.62 = 31,409.28 : x
  2. Step 2: Convert to fraction form
    115,643.43/173,449.62 = 31,409.28/x
  3. Step 3: Cross multiply
    115,643.43x = 173,449.62 × 31,409.28
  4. Step 4: Simplify right side
    115,643.43x = 5,447,927,680.47
  5. Step 5: Solve for x
    x = 5,447,927,680.47/115,643.43
  6. Step 6: Final answer
    x = 47,109.70

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