Home / 81,902.23-122,871.77-31,996.56

Finding the Fourth Proportional to 81,902.23, 122,871.77 and 31,996.56

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Solution

The fourth proportional to 81,902.23, 122,871.77 and 31,996.56 is: 48,002.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,902.23 : 122,871.77 = 31,996.56 : x
  2. Step 2: Convert to fraction form
    81,902.23/122,871.77 = 31,996.56/x
  3. Step 3: Cross multiply
    81,902.23x = 122,871.77 × 31,996.56
  4. Step 4: Simplify right side
    81,902.23x = 3,931,473,961.11
  5. Step 5: Solve for x
    x = 3,931,473,961.11/81,902.23
  6. Step 6: Final answer
    x = 48,002.04

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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.