Home / 90,631.17-125,072.64-50,348.61

Finding the Fourth Proportional to 90,631.17, 125,072.64 and 50,348.61

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Solution

The fourth proportional to 90,631.17, 125,072.64 and 50,348.61 is: 69,481.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,631.17 : 125,072.64 = 50,348.61 : x
  2. Step 2: Convert to fraction form
    90,631.17/125,072.64 = 50,348.61/x
  3. Step 3: Cross multiply
    90,631.17x = 125,072.64 × 50,348.61
  4. Step 4: Simplify right side
    90,631.17x = 6,297,233,573.03
  5. Step 5: Solve for x
    x = 6,297,233,573.03/90,631.17
  6. Step 6: Final answer
    x = 69,481.98

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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.