Home / 30,283,721.20-45,350,932.20-20,131,375.60

Finding the Fourth Proportional to 30,283,721.20, 45,350,932.20 and 20,131,375.60

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Solution

The fourth proportional to 30,283,721.20, 45,350,932.20 and 20,131,375.60 is: 30,147,439.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,283,721.20 : 45,350,932.20 = 20,131,375.60 : x
  2. Step 2: Convert to fraction form
    30,283,721.20/45,350,932.20 = 20,131,375.60/x
  3. Step 3: Cross multiply
    30,283,721.20x = 45,350,932.20 × 20,131,375.60
  4. Step 4: Simplify right side
    30,283,721.20x = 912,976,649,928,334.50
  5. Step 5: Solve for x
    x = 912,976,649,928,334.50/30,283,721.20
  6. Step 6: Final answer
    x = 30,147,439.41

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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.