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Finding the Fourth Proportional to 50,883.82, 70,221.90 and 28,221.29

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Solution

The fourth proportional to 50,883.82, 70,221.90 and 28,221.29 is: 38,946.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,883.82 : 70,221.90 = 28,221.29 : x
  2. Step 2: Convert to fraction form
    50,883.82/70,221.90 = 28,221.29/x
  3. Step 3: Cross multiply
    50,883.82x = 70,221.90 × 28,221.29
  4. Step 4: Simplify right side
    50,883.82x = 1,981,752,622.30
  5. Step 5: Solve for x
    x = 1,981,752,622.30/50,883.82
  6. Step 6: Final answer
    x = 38,946.62

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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.