Home / 54,486.20-81,741.45-21,203.30

Finding the Fourth Proportional to 54,486.20, 81,741.45 and 21,203.30

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Solution

The fourth proportional to 54,486.20, 81,741.45 and 21,203.30 is: 31,809.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,486.20 : 81,741.45 = 21,203.30 : x
  2. Step 2: Convert to fraction form
    54,486.20/81,741.45 = 21,203.30/x
  3. Step 3: Cross multiply
    54,486.20x = 81,741.45 × 21,203.30
  4. Step 4: Simplify right side
    54,486.20x = 1,733,188,486.79
  5. Step 5: Solve for x
    x = 1,733,188,486.79/54,486.20
  6. Step 6: Final answer
    x = 31,809.68

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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.