Home / 54,437.18-81,634.68-21,152.88

Finding the Fourth Proportional to 54,437.18, 81,634.68 and 21,152.88

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Solution

The fourth proportional to 54,437.18, 81,634.68 and 21,152.88 is: 31,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,437.18 : 81,634.68 = 21,152.88 : x
  2. Step 2: Convert to fraction form
    54,437.18/81,634.68 = 21,152.88/x
  3. Step 3: Cross multiply
    54,437.18x = 81,634.68 × 21,152.88
  4. Step 4: Simplify right side
    54,437.18x = 1,726,808,589.88
  5. Step 5: Solve for x
    x = 1,726,808,589.88/54,437.18
  6. Step 6: Final answer
    x = 31,721.13

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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.