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Finding the Fourth Proportional to 77,643.60, 107,145.68 and 43,653.51

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Solution

The fourth proportional to 77,643.60, 107,145.68 and 43,653.51 is: 60,240.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,643.60 : 107,145.68 = 43,653.51 : x
  2. Step 2: Convert to fraction form
    77,643.60/107,145.68 = 43,653.51/x
  3. Step 3: Cross multiply
    77,643.60x = 107,145.68 × 43,653.51
  4. Step 4: Simplify right side
    77,643.60x = 4,677,284,795.07
  5. Step 5: Solve for x
    x = 4,677,284,795.07/77,643.60
  6. Step 6: Final answer
    x = 60,240.44

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