Home / 86,906.20-130,361.74-30,738.38

Finding the Fourth Proportional to 86,906.20, 130,361.74 and 30,738.38

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Solution

The fourth proportional to 86,906.20, 130,361.74 and 30,738.38 is: 46,108.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,906.20 : 130,361.74 = 30,738.38 : x
  2. Step 2: Convert to fraction form
    86,906.20/130,361.74 = 30,738.38/x
  3. Step 3: Cross multiply
    86,906.20x = 130,361.74 × 30,738.38
  4. Step 4: Simplify right side
    86,906.20x = 4,007,108,701.58
  5. Step 5: Solve for x
    x = 4,007,108,701.58/86,906.20
  6. Step 6: Final answer
    x = 46,108.43

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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.