Home / 45,940.78-68,818.91-20,946.45

Finding the Fourth Proportional to 45,940.78, 68,818.91 and 20,946.45

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Solution

The fourth proportional to 45,940.78, 68,818.91 and 20,946.45 is: 31,377.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,940.78 : 68,818.91 = 20,946.45 : x
  2. Step 2: Convert to fraction form
    45,940.78/68,818.91 = 20,946.45/x
  3. Step 3: Cross multiply
    45,940.78x = 68,818.91 × 20,946.45
  4. Step 4: Simplify right side
    45,940.78x = 1,441,511,857.37
  5. Step 5: Solve for x
    x = 1,441,511,857.37/45,940.78
  6. Step 6: Final answer
    x = 31,377.61

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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.