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Finding the Fourth Proportional to 55,981.91, 77,251.53 and 30,831.41

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Solution

The fourth proportional to 55,981.91, 77,251.53 and 30,831.41 is: 42,545.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,981.91 : 77,251.53 = 30,831.41 : x
  2. Step 2: Convert to fraction form
    55,981.91/77,251.53 = 30,831.41/x
  3. Step 3: Cross multiply
    55,981.91x = 77,251.53 × 30,831.41
  4. Step 4: Simplify right side
    55,981.91x = 2,381,773,594.56
  5. Step 5: Solve for x
    x = 2,381,773,594.56/55,981.91
  6. Step 6: Final answer
    x = 42,545.42

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