Home / 45,375.90-68,019.48-20,422.22

Finding the Fourth Proportional to 45,375.90, 68,019.48 and 20,422.22

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Solution

The fourth proportional to 45,375.90, 68,019.48 and 20,422.22 is: 30,613.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,375.90 : 68,019.48 = 20,422.22 : x
  2. Step 2: Convert to fraction form
    45,375.90/68,019.48 = 20,422.22/x
  3. Step 3: Cross multiply
    45,375.90x = 68,019.48 × 20,422.22
  4. Step 4: Simplify right side
    45,375.90x = 1,389,108,784.85
  5. Step 5: Solve for x
    x = 1,389,108,784.85/45,375.90
  6. Step 6: Final answer
    x = 30,613.36

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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.