Home / 54,408.20-81,612.30-31,080.20

Finding the Fourth Proportional to 54,408.20, 81,612.30 and 31,080.20

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Solution

The fourth proportional to 54,408.20, 81,612.30 and 31,080.20 is: 46,620.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,408.20 : 81,612.30 = 31,080.20 : x
  2. Step 2: Convert to fraction form
    54,408.20/81,612.30 = 31,080.20/x
  3. Step 3: Cross multiply
    54,408.20x = 81,612.30 × 31,080.20
  4. Step 4: Simplify right side
    54,408.20x = 2,536,526,606.46
  5. Step 5: Solve for x
    x = 2,536,526,606.46/54,408.20
  6. Step 6: Final answer
    x = 46,620.30

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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.