Home / 54,483.32-81,717.78-21,213.56

Finding the Fourth Proportional to 54,483.32, 81,717.78 and 21,213.56

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Solution

The fourth proportional to 54,483.32, 81,717.78 and 21,213.56 is: 31,817.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,483.32 : 81,717.78 = 21,213.56 : x
  2. Step 2: Convert to fraction form
    54,483.32/81,717.78 = 21,213.56/x
  3. Step 3: Cross multiply
    54,483.32x = 81,717.78 × 21,213.56
  4. Step 4: Simplify right side
    54,483.32x = 1,733,525,029.10
  5. Step 5: Solve for x
    x = 1,733,525,029.10/54,483.32
  6. Step 6: Final answer
    x = 31,817.54

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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.