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Finding the Fourth Proportional to 51,740.80, 77,665.49 and 45,855.34

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Solution

The fourth proportional to 51,740.80, 77,665.49 and 45,855.34 is: 68,831.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,740.80 : 77,665.49 = 45,855.34 : x
  2. Step 2: Convert to fraction form
    51,740.80/77,665.49 = 45,855.34/x
  3. Step 3: Cross multiply
    51,740.80x = 77,665.49 × 45,855.34
  4. Step 4: Simplify right side
    51,740.80x = 3,561,377,450.22
  5. Step 5: Solve for x
    x = 3,561,377,450.22/51,740.80
  6. Step 6: Final answer
    x = 68,831.12

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