Home / 54,498.15-81,778.28-21,213.90

Finding the Fourth Proportional to 54,498.15, 81,778.28 and 21,213.90

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Solution

The fourth proportional to 54,498.15, 81,778.28 and 21,213.90 is: 31,832.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,498.15 : 81,778.28 = 21,213.90 : x
  2. Step 2: Convert to fraction form
    54,498.15/81,778.28 = 21,213.90/x
  3. Step 3: Cross multiply
    54,498.15x = 81,778.28 × 21,213.90
  4. Step 4: Simplify right side
    54,498.15x = 1,734,836,148.02
  5. Step 5: Solve for x
    x = 1,734,836,148.02/54,498.15
  6. Step 6: Final answer
    x = 31,832.94

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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.