Home / 81,692.48-122,546.27-31,776.36

Finding the Fourth Proportional to 81,692.48, 122,546.27 and 31,776.36

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Solution

The fourth proportional to 81,692.48, 122,546.27 and 31,776.36 is: 47,667.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,692.48 : 122,546.27 = 31,776.36 : x
  2. Step 2: Convert to fraction form
    81,692.48/122,546.27 = 31,776.36/x
  3. Step 3: Cross multiply
    81,692.48x = 122,546.27 × 31,776.36
  4. Step 4: Simplify right side
    81,692.48x = 3,894,074,233.30
  5. Step 5: Solve for x
    x = 3,894,074,233.30/81,692.48
  6. Step 6: Final answer
    x = 47,667.48

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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.