Home / 67,090.72-100,639.56-17,171.28

Finding the Fourth Proportional to 67,090.72, 100,639.56 and 17,171.28

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Solution

The fourth proportional to 67,090.72, 100,639.56 and 17,171.28 is: 25,757.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,090.72 : 100,639.56 = 17,171.28 : x
  2. Step 2: Convert to fraction form
    67,090.72/100,639.56 = 17,171.28/x
  3. Step 3: Cross multiply
    67,090.72x = 100,639.56 × 17,171.28
  4. Step 4: Simplify right side
    67,090.72x = 1,728,110,063.84
  5. Step 5: Solve for x
    x = 1,728,110,063.84/67,090.72
  6. Step 6: Final answer
    x = 25,757.81

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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.