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Finding the Fourth Proportional to 50,666, 69,919.08 and 28,310

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Solution

The fourth proportional to 50,666, 69,919.08 and 28,310 is: 39,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,666 : 69,919.08 = 28,310 : x
  2. Step 2: Convert to fraction form
    50,666/69,919.08 = 28,310/x
  3. Step 3: Cross multiply
    50,666x = 69,919.08 × 28,310
  4. Step 4: Simplify right side
    50,666x = 1,979,409,154.80
  5. Step 5: Solve for x
    x = 1,979,409,154.80/50,666
  6. Step 6: Final answer
    x = 39,067.80

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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.