Home / 81,939.12-122,911.11-32,017.20

Finding the Fourth Proportional to 81,939.12, 122,911.11 and 32,017.20

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Solution

The fourth proportional to 81,939.12, 122,911.11 and 32,017.20 is: 48,026.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,939.12 : 122,911.11 = 32,017.20 : x
  2. Step 2: Convert to fraction form
    81,939.12/122,911.11 = 32,017.20/x
  3. Step 3: Cross multiply
    81,939.12x = 122,911.11 × 32,017.20
  4. Step 4: Simplify right side
    81,939.12x = 3,935,269,591.09
  5. Step 5: Solve for x
    x = 3,935,269,591.09/81,939.12
  6. Step 6: Final answer
    x = 48,026.75

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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.