Home / 54,422.21-81,617.76-21,135.15

Finding the Fourth Proportional to 54,422.21, 81,617.76 and 21,135.15

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Solution

The fourth proportional to 54,422.21, 81,617.76 and 21,135.15 is: 31,696.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,422.21 : 81,617.76 = 21,135.15 : x
  2. Step 2: Convert to fraction form
    54,422.21/81,617.76 = 21,135.15/x
  3. Step 3: Cross multiply
    54,422.21x = 81,617.76 × 21,135.15
  4. Step 4: Simplify right side
    54,422.21x = 1,725,003,600.26
  5. Step 5: Solve for x
    x = 1,725,003,600.26/54,422.21
  6. Step 6: Final answer
    x = 31,696.68

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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.