Home / 90,738.78-136,019.46-40,831.44

Finding the Fourth Proportional to 90,738.78, 136,019.46 and 40,831.44

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Solution

The fourth proportional to 90,738.78, 136,019.46 and 40,831.44 is: 61,207.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,738.78 : 136,019.46 = 40,831.44 : x
  2. Step 2: Convert to fraction form
    90,738.78/136,019.46 = 40,831.44/x
  3. Step 3: Cross multiply
    90,738.78x = 136,019.46 × 40,831.44
  4. Step 4: Simplify right side
    90,738.78x = 5,553,870,419.82
  5. Step 5: Solve for x
    x = 5,553,870,419.82/90,738.78
  6. Step 6: Final answer
    x = 61,207.24

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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.