Home / 45,361.74-68,019.30-20,380.38

Finding the Fourth Proportional to 45,361.74, 68,019.30 and 20,380.38

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Solution

The fourth proportional to 45,361.74, 68,019.30 and 20,380.38 is: 30,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,361.74 : 68,019.30 = 20,380.38 : x
  2. Step 2: Convert to fraction form
    45,361.74/68,019.30 = 20,380.38/x
  3. Step 3: Cross multiply
    45,361.74x = 68,019.30 × 20,380.38
  4. Step 4: Simplify right side
    45,361.74x = 1,386,259,181.33
  5. Step 5: Solve for x
    x = 1,386,259,181.33/45,361.74
  6. Step 6: Final answer
    x = 30,560.10

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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.