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Finding the Fourth Proportional to 50,771.79, 70,063.17 and 28,109

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Solution

The fourth proportional to 50,771.79, 70,063.17 and 28,109 is: 38,789.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,771.79 : 70,063.17 = 28,109 : x
  2. Step 2: Convert to fraction form
    50,771.79/70,063.17 = 28,109/x
  3. Step 3: Cross multiply
    50,771.79x = 70,063.17 × 28,109
  4. Step 4: Simplify right side
    50,771.79x = 1,969,405,645.53
  5. Step 5: Solve for x
    x = 1,969,405,645.53/50,771.79
  6. Step 6: Final answer
    x = 38,789.37

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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.