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Finding the Fourth Proportional to 65,241.05, 90,213.89 and 51,788.97

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Solution

The fourth proportional to 65,241.05, 90,213.89 and 51,788.97 is: 71,612.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,241.05 : 90,213.89 = 51,788.97 : x
  2. Step 2: Convert to fraction form
    65,241.05/90,213.89 = 51,788.97/x
  3. Step 3: Cross multiply
    65,241.05x = 90,213.89 × 51,788.97
  4. Step 4: Simplify right side
    65,241.05x = 4,672,084,183.85
  5. Step 5: Solve for x
    x = 4,672,084,183.85/65,241.05
  6. Step 6: Final answer
    x = 71,612.65

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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.