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Finding the Fourth Proportional to 81,210.72, 112,070.28 and 45,400.56

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Solution

The fourth proportional to 81,210.72, 112,070.28 and 45,400.56 is: 62,652.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,210.72 : 112,070.28 = 45,400.56 : x
  2. Step 2: Convert to fraction form
    81,210.72/112,070.28 = 45,400.56/x
  3. Step 3: Cross multiply
    81,210.72x = 112,070.28 × 45,400.56
  4. Step 4: Simplify right side
    81,210.72x = 5,088,053,471.36
  5. Step 5: Solve for x
    x = 5,088,053,471.36/81,210.72
  6. Step 6: Final answer
    x = 62,652.49

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