Home / 52,211.85-71,997.90-30,987.03

Finding the Fourth Proportional to 52,211.85, 71,997.90 and 30,987.03

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Solution

The fourth proportional to 52,211.85, 71,997.90 and 30,987.03 is: 42,729.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,211.85 : 71,997.90 = 30,987.03 : x
  2. Step 2: Convert to fraction form
    52,211.85/71,997.90 = 30,987.03/x
  3. Step 3: Cross multiply
    52,211.85x = 71,997.90 × 30,987.03
  4. Step 4: Simplify right side
    52,211.85x = 2,231,001,087.24
  5. Step 5: Solve for x
    x = 2,231,001,087.24/52,211.85
  6. Step 6: Final answer
    x = 42,729.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.