Home / 90,072.20-124,286.38-51,310.37

Finding the Fourth Proportional to 90,072.20, 124,286.38 and 51,310.37

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Solution

The fourth proportional to 90,072.20, 124,286.38 and 51,310.37 is: 70,800.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,072.20 : 124,286.38 = 51,310.37 : x
  2. Step 2: Convert to fraction form
    90,072.20/124,286.38 = 51,310.37/x
  3. Step 3: Cross multiply
    90,072.20x = 124,286.38 × 51,310.37
  4. Step 4: Simplify right side
    90,072.20x = 6,377,180,326.20
  5. Step 5: Solve for x
    x = 6,377,180,326.20/90,072.20
  6. Step 6: Final answer
    x = 70,800.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.