Home / 54,486.23-81,729.20-14,505.21

Finding the Fourth Proportional to 54,486.23, 81,729.20 and 14,505.21

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Solution

The fourth proportional to 54,486.23, 81,729.20 and 14,505.21 is: 21,757.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,486.23 : 81,729.20 = 14,505.21 : x
  2. Step 2: Convert to fraction form
    54,486.23/81,729.20 = 14,505.21/x
  3. Step 3: Cross multiply
    54,486.23x = 81,729.20 × 14,505.21
  4. Step 4: Simplify right side
    54,486.23x = 1,185,499,136.61
  5. Step 5: Solve for x
    x = 1,185,499,136.61/54,486.23
  6. Step 6: Final answer
    x = 21,757.78

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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.