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Finding the Fourth Proportional to 83,280.52, 124,920.84 and 20,951

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Solution

The fourth proportional to 83,280.52, 124,920.84 and 20,951 is: 31,426.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,280.52 : 124,920.84 = 20,951 : x
  2. Step 2: Convert to fraction form
    83,280.52/124,920.84 = 20,951/x
  3. Step 3: Cross multiply
    83,280.52x = 124,920.84 × 20,951
  4. Step 4: Simplify right side
    83,280.52x = 2,617,216,518.84
  5. Step 5: Solve for x
    x = 2,617,216,518.84/83,280.52
  6. Step 6: Final answer
    x = 31,426.52

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