Home / 91,940.67-137,831.97-31,961.28

Finding the Fourth Proportional to 91,940.67, 137,831.97 and 31,961.28

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Solution

The fourth proportional to 91,940.67, 137,831.97 and 31,961.28 is: 47,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,940.67 : 137,831.97 = 31,961.28 : x
  2. Step 2: Convert to fraction form
    91,940.67/137,831.97 = 31,961.28/x
  3. Step 3: Cross multiply
    91,940.67x = 137,831.97 × 31,961.28
  4. Step 4: Simplify right side
    91,940.67x = 4,405,286,186.12
  5. Step 5: Solve for x
    x = 4,405,286,186.12/91,940.67
  6. Step 6: Final answer
    x = 47,914.45

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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.