Home / 81,709.34-122,571.97-31,793.49

Finding the Fourth Proportional to 81,709.34, 122,571.97 and 31,793.49

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Solution

The fourth proportional to 81,709.34, 122,571.97 and 31,793.49 is: 47,693.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,709.34 : 122,571.97 = 31,793.49 : x
  2. Step 2: Convert to fraction form
    81,709.34/122,571.97 = 31,793.49/x
  3. Step 3: Cross multiply
    81,709.34x = 122,571.97 × 31,793.49
  4. Step 4: Simplify right side
    81,709.34x = 3,896,990,622.99
  5. Step 5: Solve for x
    x = 3,896,990,622.99/81,709.34
  6. Step 6: Final answer
    x = 47,693.33

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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.