Home / 67,206.38-100,802.37-20,459.66

Finding the Fourth Proportional to 67,206.38, 100,802.37 and 20,459.66

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Solution

The fourth proportional to 67,206.38, 100,802.37 and 20,459.66 is: 30,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,206.38 : 100,802.37 = 20,459.66 : x
  2. Step 2: Convert to fraction form
    67,206.38/100,802.37 = 20,459.66/x
  3. Step 3: Cross multiply
    67,206.38x = 100,802.37 × 20,459.66
  4. Step 4: Simplify right side
    67,206.38x = 2,062,382,217.39
  5. Step 5: Solve for x
    x = 2,062,382,217.39/67,206.38
  6. Step 6: Final answer
    x = 30,687.30

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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.