Home / 65,720.26-90,694.01-35,505.57

Finding the Fourth Proportional to 65,720.26, 90,694.01 and 35,505.57

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Solution

The fourth proportional to 65,720.26, 90,694.01 and 35,505.57 is: 48,997.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,720.26 : 90,694.01 = 35,505.57 : x
  2. Step 2: Convert to fraction form
    65,720.26/90,694.01 = 35,505.57/x
  3. Step 3: Cross multiply
    65,720.26x = 90,694.01 × 35,505.57
  4. Step 4: Simplify right side
    65,720.26x = 3,220,142,343.11
  5. Step 5: Solve for x
    x = 3,220,142,343.11/65,720.26
  6. Step 6: Final answer
    x = 48,997.71

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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.