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Finding the Fourth Proportional to 86,403.06, 129,662.94 and 30,243.63

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Solution

The fourth proportional to 86,403.06, 129,662.94 and 30,243.63 is: 45,385.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,403.06 : 129,662.94 = 30,243.63 : x
  2. Step 2: Convert to fraction form
    86,403.06/129,662.94 = 30,243.63/x
  3. Step 3: Cross multiply
    86,403.06x = 129,662.94 × 30,243.63
  4. Step 4: Simplify right side
    86,403.06x = 3,921,477,982.07
  5. Step 5: Solve for x
    x = 3,921,477,982.07/86,403.06
  6. Step 6: Final answer
    x = 45,385.87

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