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Finding the Fourth Proportional to 90,036, 124,249.68 and 50,292

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Solution

The fourth proportional to 90,036, 124,249.68 and 50,292 is: 69,402.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,036 : 124,249.68 = 50,292 : x
  2. Step 2: Convert to fraction form
    90,036/124,249.68 = 50,292/x
  3. Step 3: Cross multiply
    90,036x = 124,249.68 × 50,292
  4. Step 4: Simplify right side
    90,036x = 6,248,764,906.56
  5. Step 5: Solve for x
    x = 6,248,764,906.56/90,036
  6. Step 6: Final answer
    x = 69,402.96

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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.