Home / 54,121.20-81,181.80-40,999.20

Finding the Fourth Proportional to 54,121.20, 81,181.80 and 40,999.20

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Solution

The fourth proportional to 54,121.20, 81,181.80 and 40,999.20 is: 61,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,121.20 : 81,181.80 = 40,999.20 : x
  2. Step 2: Convert to fraction form
    54,121.20/81,181.80 = 40,999.20/x
  3. Step 3: Cross multiply
    54,121.20x = 81,181.80 × 40,999.20
  4. Step 4: Simplify right side
    54,121.20x = 3,328,388,854.56
  5. Step 5: Solve for x
    x = 3,328,388,854.56/54,121.20
  6. Step 6: Final answer
    x = 61,498.80

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1.5x scale

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.