Home / 81,709.52-122,571.84-31,793.36

Finding the Fourth Proportional to 81,709.52, 122,571.84 and 31,793.36

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Solution

The fourth proportional to 81,709.52, 122,571.84 and 31,793.36 is: 47,692.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,709.52 : 122,571.84 = 31,793.36 : x
  2. Step 2: Convert to fraction form
    81,709.52/122,571.84 = 31,793.36/x
  3. Step 3: Cross multiply
    81,709.52x = 122,571.84 × 31,793.36
  4. Step 4: Simplify right side
    81,709.52x = 3,896,970,634.98
  5. Step 5: Solve for x
    x = 3,896,970,634.98/81,709.52
  6. Step 6: Final answer
    x = 47,692.98

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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.