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Finding the Fourth Proportional to 80,783.37, 121,175.12 and 38,653.51

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Solution

The fourth proportional to 80,783.37, 121,175.12 and 38,653.51 is: 57,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,783.37 : 121,175.12 = 38,653.51 : x
  2. Step 2: Convert to fraction form
    80,783.37/121,175.12 = 38,653.51/x
  3. Step 3: Cross multiply
    80,783.37x = 121,175.12 × 38,653.51
  4. Step 4: Simplify right side
    80,783.37x = 4,683,843,519.40
  5. Step 5: Solve for x
    x = 4,683,843,519.40/80,783.37
  6. Step 6: Final answer
    x = 57,980.30

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