Home / 81,908.20-122,831.58-35,137

Finding the Fourth Proportional to 81,908.20, 122,831.58 and 35,137

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Solution

The fourth proportional to 81,908.20, 122,831.58 and 35,137 is: 52,692.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,908.20 : 122,831.58 = 35,137 : x
  2. Step 2: Convert to fraction form
    81,908.20/122,831.58 = 35,137/x
  3. Step 3: Cross multiply
    81,908.20x = 122,831.58 × 35,137
  4. Step 4: Simplify right side
    81,908.20x = 4,315,933,226.46
  5. Step 5: Solve for x
    x = 4,315,933,226.46/81,908.20
  6. Step 6: Final answer
    x = 52,692.32

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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.