Home / 77,512.20-115,976.70-51,268.20

Finding the Fourth Proportional to 77,512.20, 115,976.70 and 51,268.20

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Solution

The fourth proportional to 77,512.20, 115,976.70 and 51,268.20 is: 76,709.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,512.20 : 115,976.70 = 51,268.20 : x
  2. Step 2: Convert to fraction form
    77,512.20/115,976.70 = 51,268.20/x
  3. Step 3: Cross multiply
    77,512.20x = 115,976.70 × 51,268.20
  4. Step 4: Simplify right side
    77,512.20x = 5,945,916,650.94
  5. Step 5: Solve for x
    x = 5,945,916,650.94/77,512.20
  6. Step 6: Final answer
    x = 76,709.43

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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.