Home / 47,481.18-71,225.82-12,420.78

Finding the Fourth Proportional to 47,481.18, 71,225.82 and 12,420.78

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Solution

The fourth proportional to 47,481.18, 71,225.82 and 12,420.78 is: 18,632.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,481.18 : 71,225.82 = 12,420.78 : x
  2. Step 2: Convert to fraction form
    47,481.18/71,225.82 = 12,420.78/x
  3. Step 3: Cross multiply
    47,481.18x = 71,225.82 × 12,420.78
  4. Step 4: Simplify right side
    47,481.18x = 884,680,240.54
  5. Step 5: Solve for x
    x = 884,680,240.54/47,481.18
  6. Step 6: Final answer
    x = 18,632.23

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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.