Home / 54,311.64-81,480.20-16,869.78

Finding the Fourth Proportional to 54,311.64, 81,480.20 and 16,869.78

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Solution

The fourth proportional to 54,311.64, 81,480.20 and 16,869.78 is: 25,308.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,311.64 : 81,480.20 = 16,869.78 : x
  2. Step 2: Convert to fraction form
    54,311.64/81,480.20 = 16,869.78/x
  3. Step 3: Cross multiply
    54,311.64x = 81,480.20 × 16,869.78
  4. Step 4: Simplify right side
    54,311.64x = 1,374,553,048.36
  5. Step 5: Solve for x
    x = 1,374,553,048.36/54,311.64
  6. Step 6: Final answer
    x = 25,308.63

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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.