Home / 54,478.85-81,722.39-21,184.61

Finding the Fourth Proportional to 54,478.85, 81,722.39 and 21,184.61

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Solution

The fourth proportional to 54,478.85, 81,722.39 and 21,184.61 is: 31,778.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,478.85 : 81,722.39 = 21,184.61 : x
  2. Step 2: Convert to fraction form
    54,478.85/81,722.39 = 21,184.61/x
  3. Step 3: Cross multiply
    54,478.85x = 81,722.39 × 21,184.61
  4. Step 4: Simplify right side
    54,478.85x = 1,731,256,445.88
  5. Step 5: Solve for x
    x = 1,731,256,445.88/54,478.85
  6. Step 6: Final answer
    x = 31,778.51

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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.