Home / 67,108.50-100,663.36-20,361.38

Finding the Fourth Proportional to 67,108.50, 100,663.36 and 20,361.38

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Solution

The fourth proportional to 67,108.50, 100,663.36 and 20,361.38 is: 30,542.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,108.50 : 100,663.36 = 20,361.38 : x
  2. Step 2: Convert to fraction form
    67,108.50/100,663.36 = 20,361.38/x
  3. Step 3: Cross multiply
    67,108.50x = 100,663.36 × 20,361.38
  4. Step 4: Simplify right side
    67,108.50x = 2,049,644,370.82
  5. Step 5: Solve for x
    x = 2,049,644,370.82/67,108.50
  6. Step 6: Final answer
    x = 30,542.25

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1.5x scale

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.