Home / 47,970.78-71,949.68-12,912.54

Finding the Fourth Proportional to 47,970.78, 71,949.68 and 12,912.54

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Solution

The fourth proportional to 47,970.78, 71,949.68 and 12,912.54 is: 19,367.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,970.78 : 71,949.68 = 12,912.54 : x
  2. Step 2: Convert to fraction form
    47,970.78/71,949.68 = 12,912.54/x
  3. Step 3: Cross multiply
    47,970.78x = 71,949.68 × 12,912.54
  4. Step 4: Simplify right side
    47,970.78x = 929,053,120.99
  5. Step 5: Solve for x
    x = 929,053,120.99/47,970.78
  6. Step 6: Final answer
    x = 19,367.06

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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.