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Finding the Fourth Proportional to 65,919.17, 98,709.85 and 45,627.80

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Solution

The fourth proportional to 65,919.17, 98,709.85 and 45,627.80 is: 68,324.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,919.17 : 98,709.85 = 45,627.80 : x
  2. Step 2: Convert to fraction form
    65,919.17/98,709.85 = 45,627.80/x
  3. Step 3: Cross multiply
    65,919.17x = 98,709.85 × 45,627.80
  4. Step 4: Simplify right side
    65,919.17x = 4,503,912,806.25
  5. Step 5: Solve for x
    x = 4,503,912,806.25/65,919.17
  6. Step 6: Final answer
    x = 68,324.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.