Home / 67,221.24-100,776.78-27,806.64

Finding the Fourth Proportional to 67,221.24, 100,776.78 and 27,806.64

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Solution

The fourth proportional to 67,221.24, 100,776.78 and 27,806.64 is: 41,687.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,221.24 : 100,776.78 = 27,806.64 : x
  2. Step 2: Convert to fraction form
    67,221.24/100,776.78 = 27,806.64/x
  3. Step 3: Cross multiply
    67,221.24x = 100,776.78 × 27,806.64
  4. Step 4: Simplify right side
    67,221.24x = 2,802,263,641.82
  5. Step 5: Solve for x
    x = 2,802,263,641.82/67,221.24
  6. Step 6: Final answer
    x = 41,687.18

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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.