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Finding the Fourth Proportional to 90,694.67, 125,162.87 and 50,409.09

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Solution

The fourth proportional to 90,694.67, 125,162.87 and 50,409.09 is: 69,566.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,694.67 : 125,162.87 = 50,409.09 : x
  2. Step 2: Convert to fraction form
    90,694.67/125,162.87 = 50,409.09/x
  3. Step 3: Cross multiply
    90,694.67x = 125,162.87 × 50,409.09
  4. Step 4: Simplify right side
    90,694.67x = 6,309,346,126.44
  5. Step 5: Solve for x
    x = 6,309,346,126.44/90,694.67
  6. Step 6: Final answer
    x = 69,566.89

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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.