Home / 45,131.18-67,721.36-20,170.22

Finding the Fourth Proportional to 45,131.18, 67,721.36 and 20,170.22

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Solution

The fourth proportional to 45,131.18, 67,721.36 and 20,170.22 is: 30,266.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,131.18 : 67,721.36 = 20,170.22 : x
  2. Step 2: Convert to fraction form
    45,131.18/67,721.36 = 20,170.22/x
  3. Step 3: Cross multiply
    45,131.18x = 67,721.36 × 20,170.22
  4. Step 4: Simplify right side
    45,131.18x = 1,365,954,729.90
  5. Step 5: Solve for x
    x = 1,365,954,729.90/45,131.18
  6. Step 6: Final answer
    x = 30,266.32

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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.