Home / 82,609.39-123,845.64-68,530.51

Finding the Fourth Proportional to 82,609.39, 123,845.64 and 68,530.51

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Solution

The fourth proportional to 82,609.39, 123,845.64 and 68,530.51 is: 102,738.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,609.39 : 123,845.64 = 68,530.51 : x
  2. Step 2: Convert to fraction form
    82,609.39/123,845.64 = 68,530.51/x
  3. Step 3: Cross multiply
    82,609.39x = 123,845.64 × 68,530.51
  4. Step 4: Simplify right side
    82,609.39x = 8,487,204,870.48
  5. Step 5: Solve for x
    x = 8,487,204,870.48/82,609.39
  6. Step 6: Final answer
    x = 102,738.98

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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.