Home / 54,234.20-81,243.30-47,739.80

Finding the Fourth Proportional to 54,234.20, 81,243.30 and 47,739.80

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Solution

The fourth proportional to 54,234.20, 81,243.30 and 47,739.80 is: 71,514.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,234.20 : 81,243.30 = 47,739.80 : x
  2. Step 2: Convert to fraction form
    54,234.20/81,243.30 = 47,739.80/x
  3. Step 3: Cross multiply
    54,234.20x = 81,243.30 × 47,739.80
  4. Step 4: Simplify right side
    54,234.20x = 3,878,538,893.34
  5. Step 5: Solve for x
    x = 3,878,538,893.34/54,234.20
  6. Step 6: Final answer
    x = 71,514.63

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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.