Home / 47,200.78-70,789.83-13,911.85

Finding the Fourth Proportional to 47,200.78, 70,789.83 and 13,911.85

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Solution

The fourth proportional to 47,200.78, 70,789.83 and 13,911.85 is: 20,864.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,200.78 : 70,789.83 = 13,911.85 : x
  2. Step 2: Convert to fraction form
    47,200.78/70,789.83 = 13,911.85/x
  3. Step 3: Cross multiply
    47,200.78x = 70,789.83 × 13,911.85
  4. Step 4: Simplify right side
    47,200.78x = 984,817,496.49
  5. Step 5: Solve for x
    x = 984,817,496.49/47,200.78
  6. Step 6: Final answer
    x = 20,864.43

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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.