Home / 54,422.57-81,618.39-21,135.53

Finding the Fourth Proportional to 54,422.57, 81,618.39 and 21,135.53

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Solution

The fourth proportional to 54,422.57, 81,618.39 and 21,135.53 is: 31,697.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,422.57 : 81,618.39 = 21,135.53 : x
  2. Step 2: Convert to fraction form
    54,422.57/81,618.39 = 21,135.53/x
  3. Step 3: Cross multiply
    54,422.57x = 81,618.39 × 21,135.53
  4. Step 4: Simplify right side
    54,422.57x = 1,725,047,930.40
  5. Step 5: Solve for x
    x = 1,725,047,930.40/54,422.57
  6. Step 6: Final answer
    x = 31,697.29

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1.5x scale

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.