Home / 20,129,048.40-30,193,572.60-4,982,979.90

Finding the Fourth Proportional to 20,129,048.40, 30,193,572.60 and 4,982,979.90

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Solution

The fourth proportional to 20,129,048.40, 30,193,572.60 and 4,982,979.90 is: 7,474,469.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129,048.40 : 30,193,572.60 = 4,982,979.90 : x
  2. Step 2: Convert to fraction form
    20,129,048.40/30,193,572.60 = 4,982,979.90/x
  3. Step 3: Cross multiply
    20,129,048.40x = 30,193,572.60 × 4,982,979.90
  4. Step 4: Simplify right side
    20,129,048.40x = 150,453,965,374,990.75
  5. Step 5: Solve for x
    x = 150,453,965,374,990.75/20,129,048.40
  6. Step 6: Final answer
    x = 7,474,469.85

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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.