Home / 47,178.82-70,772.46-12,118.78

Finding the Fourth Proportional to 47,178.82, 70,772.46 and 12,118.78

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Solution

The fourth proportional to 47,178.82, 70,772.46 and 12,118.78 is: 18,179.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,178.82 : 70,772.46 = 12,118.78 : x
  2. Step 2: Convert to fraction form
    47,178.82/70,772.46 = 12,118.78/x
  3. Step 3: Cross multiply
    47,178.82x = 70,772.46 × 12,118.78
  4. Step 4: Simplify right side
    47,178.82x = 857,675,872.80
  5. Step 5: Solve for x
    x = 857,675,872.80/47,178.82
  6. Step 6: Final answer
    x = 18,179.26

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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.