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Finding the Fourth Proportional to 50,690.39, 69,948.99 and 28,029.68

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Solution

The fourth proportional to 50,690.39, 69,948.99 and 28,029.68 is: 38,678.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,690.39 : 69,948.99 = 28,029.68 : x
  2. Step 2: Convert to fraction form
    50,690.39/69,948.99 = 28,029.68/x
  3. Step 3: Cross multiply
    50,690.39x = 69,948.99 × 28,029.68
  4. Step 4: Simplify right side
    50,690.39x = 1,960,647,456.28
  5. Step 5: Solve for x
    x = 1,960,647,456.28/50,690.39
  6. Step 6: Final answer
    x = 38,678.88

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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.