Home / 82,609.89-123,846.39-68,531.01

Finding the Fourth Proportional to 82,609.89, 123,846.39 and 68,531.01

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Solution

The fourth proportional to 82,609.89, 123,846.39 and 68,531.01 is: 102,739.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,609.89 : 123,846.39 = 68,531.01 : x
  2. Step 2: Convert to fraction form
    82,609.89/123,846.39 = 68,531.01/x
  3. Step 3: Cross multiply
    82,609.89x = 123,846.39 × 68,531.01
  4. Step 4: Simplify right side
    82,609.89x = 8,487,318,191.55
  5. Step 5: Solve for x
    x = 8,487,318,191.55/82,609.89
  6. Step 6: Final answer
    x = 102,739.73

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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.