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Finding the Fourth Proportional to 80,776.54, 121,156.17 and 28,187.02

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Solution

The fourth proportional to 80,776.54, 121,156.17 and 28,187.02 is: 42,277.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,776.54 : 121,156.17 = 28,187.02 : x
  2. Step 2: Convert to fraction form
    80,776.54/121,156.17 = 28,187.02/x
  3. Step 3: Cross multiply
    80,776.54x = 121,156.17 × 28,187.02
  4. Step 4: Simplify right side
    80,776.54x = 3,415,031,386.91
  5. Step 5: Solve for x
    x = 3,415,031,386.91/80,776.54
  6. Step 6: Final answer
    x = 42,277.52

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