Home / 47,249.20-70,906.20-20,972.80

Finding the Fourth Proportional to 47,249.20, 70,906.20 and 20,972.80

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Solution

The fourth proportional to 47,249.20, 70,906.20 and 20,972.80 is: 31,473.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,249.20 : 70,906.20 = 20,972.80 : x
  2. Step 2: Convert to fraction form
    47,249.20/70,906.20 = 20,972.80/x
  3. Step 3: Cross multiply
    47,249.20x = 70,906.20 × 20,972.80
  4. Step 4: Simplify right side
    47,249.20x = 1,487,101,551.36
  5. Step 5: Solve for x
    x = 1,487,101,551.36/47,249.20
  6. Step 6: Final answer
    x = 31,473.58

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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.