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Finding the Fourth Proportional to 54,318.80, 81,479.90 and 16,879.07

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Solution

The fourth proportional to 54,318.80, 81,479.90 and 16,879.07 is: 25,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,318.80 : 81,479.90 = 16,879.07 : x
  2. Step 2: Convert to fraction form
    54,318.80/81,479.90 = 16,879.07/x
  3. Step 3: Cross multiply
    54,318.80x = 81,479.90 × 16,879.07
  4. Step 4: Simplify right side
    54,318.80x = 1,375,304,570.49
  5. Step 5: Solve for x
    x = 1,375,304,570.49/54,318.80
  6. Step 6: Final answer
    x = 25,319.13

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1.5x scale

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.