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Finding the Fourth Proportional to 65,297.75, 90,110.90 and 35,489.75

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Solution

The fourth proportional to 65,297.75, 90,110.90 and 35,489.75 is: 48,975.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,297.75 : 90,110.90 = 35,489.75 : x
  2. Step 2: Convert to fraction form
    65,297.75/90,110.90 = 35,489.75/x
  3. Step 3: Cross multiply
    65,297.75x = 90,110.90 × 35,489.75
  4. Step 4: Simplify right side
    65,297.75x = 3,198,013,313.28
  5. Step 5: Solve for x
    x = 3,198,013,313.28/65,297.75
  6. Step 6: Final answer
    x = 48,975.86

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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.