Home / 67,512.72-101,270.70-20,766

Finding the Fourth Proportional to 67,512.72, 101,270.70 and 20,766

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Solution

The fourth proportional to 67,512.72, 101,270.70 and 20,766 is: 31,149.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,512.72 : 101,270.70 = 20,766 : x
  2. Step 2: Convert to fraction form
    67,512.72/101,270.70 = 20,766/x
  3. Step 3: Cross multiply
    67,512.72x = 101,270.70 × 20,766
  4. Step 4: Simplify right side
    67,512.72x = 2,102,987,356.20
  5. Step 5: Solve for x
    x = 2,102,987,356.20/67,512.72
  6. Step 6: Final answer
    x = 31,149.50

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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.