Home / 67,901.68-101,853.28-20,517.16

Finding the Fourth Proportional to 67,901.68, 101,853.28 and 20,517.16

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Solution

The fourth proportional to 67,901.68, 101,853.28 and 20,517.16 is: 30,775.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,901.68 : 101,853.28 = 20,517.16 : x
  2. Step 2: Convert to fraction form
    67,901.68/101,853.28 = 20,517.16/x
  3. Step 3: Cross multiply
    67,901.68x = 101,853.28 × 20,517.16
  4. Step 4: Simplify right side
    67,901.68x = 2,089,740,042.28
  5. Step 5: Solve for x
    x = 2,089,740,042.28/67,901.68
  6. Step 6: Final answer
    x = 30,775.97

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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.