Home / 45,414.09-68,120.34-20,436.46

Finding the Fourth Proportional to 45,414.09, 68,120.34 and 20,436.46

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Solution

The fourth proportional to 45,414.09, 68,120.34 and 20,436.46 is: 30,654.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,414.09 : 68,120.34 = 20,436.46 : x
  2. Step 2: Convert to fraction form
    45,414.09/68,120.34 = 20,436.46/x
  3. Step 3: Cross multiply
    45,414.09x = 68,120.34 × 20,436.46
  4. Step 4: Simplify right side
    45,414.09x = 1,392,138,603.60
  5. Step 5: Solve for x
    x = 1,392,138,603.60/45,414.09
  6. Step 6: Final answer
    x = 30,654.33

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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.