Home / 54,432.13-81,653.33-21,154.75

Finding the Fourth Proportional to 54,432.13, 81,653.33 and 21,154.75

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Solution

The fourth proportional to 54,432.13, 81,653.33 and 21,154.75 is: 31,734.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,432.13 : 81,653.33 = 21,154.75 : x
  2. Step 2: Convert to fraction form
    54,432.13/81,653.33 = 21,154.75/x
  3. Step 3: Cross multiply
    54,432.13x = 81,653.33 × 21,154.75
  4. Step 4: Simplify right side
    54,432.13x = 1,727,355,472.91
  5. Step 5: Solve for x
    x = 1,727,355,472.91/54,432.13
  6. Step 6: Final answer
    x = 31,734.12

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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.