Home / 81,692.14-122,537.76-31,806.94

Finding the Fourth Proportional to 81,692.14, 122,537.76 and 31,806.94

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Solution

The fourth proportional to 81,692.14, 122,537.76 and 31,806.94 is: 47,710.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,692.14 : 122,537.76 = 31,806.94 : x
  2. Step 2: Convert to fraction form
    81,692.14/122,537.76 = 31,806.94/x
  3. Step 3: Cross multiply
    81,692.14x = 122,537.76 × 31,806.94
  4. Step 4: Simplify right side
    81,692.14x = 3,897,551,180.05
  5. Step 5: Solve for x
    x = 3,897,551,180.05/81,692.14
  6. Step 6: Final answer
    x = 47,710.23

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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.