Home / 91,481.71-137,222.41-47,121.15

Finding the Fourth Proportional to 91,481.71, 137,222.41 and 47,121.15

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Solution

The fourth proportional to 91,481.71, 137,222.41 and 47,121.15 is: 70,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,481.71 : 137,222.41 = 47,121.15 : x
  2. Step 2: Convert to fraction form
    91,481.71/137,222.41 = 47,121.15/x
  3. Step 3: Cross multiply
    91,481.71x = 137,222.41 × 47,121.15
  4. Step 4: Simplify right side
    91,481.71x = 6,466,077,764.97
  5. Step 5: Solve for x
    x = 6,466,077,764.97/91,481.71
  6. Step 6: Final answer
    x = 70,681.65

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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.