Home / 54,608.40-81,912.60-21,329.55

Finding the Fourth Proportional to 54,608.40, 81,912.60 and 21,329.55

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Solution

The fourth proportional to 54,608.40, 81,912.60 and 21,329.55 is: 31,994.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,608.40 : 81,912.60 = 21,329.55 : x
  2. Step 2: Convert to fraction form
    54,608.40/81,912.60 = 21,329.55/x
  3. Step 3: Cross multiply
    54,608.40x = 81,912.60 × 21,329.55
  4. Step 4: Simplify right side
    54,608.40x = 1,747,158,897.33
  5. Step 5: Solve for x
    x = 1,747,158,897.33/54,608.40
  6. Step 6: Final answer
    x = 31,994.33

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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.