Home / 81,712.92-122,604.12-46,179.12

Finding the Fourth Proportional to 81,712.92, 122,604.12 and 46,179.12

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Solution

The fourth proportional to 81,712.92, 122,604.12 and 46,179.12 is: 69,288.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,712.92 : 122,604.12 = 46,179.12 : x
  2. Step 2: Convert to fraction form
    81,712.92/122,604.12 = 46,179.12/x
  3. Step 3: Cross multiply
    81,712.92x = 122,604.12 × 46,179.12
  4. Step 4: Simplify right side
    81,712.92x = 5,661,750,369.97
  5. Step 5: Solve for x
    x = 5,661,750,369.97/81,712.92
  6. Step 6: Final answer
    x = 69,288.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.