Home / 81,982.32-123,003.48-34,609.20

Finding the Fourth Proportional to 81,982.32, 123,003.48 and 34,609.20

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Solution

The fourth proportional to 81,982.32, 123,003.48 and 34,609.20 is: 51,926.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,982.32 : 123,003.48 = 34,609.20 : x
  2. Step 2: Convert to fraction form
    81,982.32/123,003.48 = 34,609.20/x
  3. Step 3: Cross multiply
    81,982.32x = 123,003.48 × 34,609.20
  4. Step 4: Simplify right side
    81,982.32x = 4,257,052,040.02
  5. Step 5: Solve for x
    x = 4,257,052,040.02/81,982.32
  6. Step 6: Final answer
    x = 51,926.46

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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.