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Finding the Fourth Proportional to 81,565.76, 112,550.64 and 45,750.80

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Solution

The fourth proportional to 81,565.76, 112,550.64 and 45,750.80 is: 63,130.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,565.76 : 112,550.64 = 45,750.80 : x
  2. Step 2: Convert to fraction form
    81,565.76/112,550.64 = 45,750.80/x
  3. Step 3: Cross multiply
    81,565.76x = 112,550.64 × 45,750.80
  4. Step 4: Simplify right side
    81,565.76x = 5,149,281,820.51
  5. Step 5: Solve for x
    x = 5,149,281,820.51/81,565.76
  6. Step 6: Final answer
    x = 63,130.43

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