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Finding the Fourth Proportional to 65,791.56, 90,786.87 and 37,109.64

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Solution

The fourth proportional to 65,791.56, 90,786.87 and 37,109.64 is: 51,208.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,791.56 : 90,786.87 = 37,109.64 : x
  2. Step 2: Convert to fraction form
    65,791.56/90,786.87 = 37,109.64/x
  3. Step 3: Cross multiply
    65,791.56x = 90,786.87 × 37,109.64
  4. Step 4: Simplify right side
    65,791.56x = 3,369,068,062.43
  5. Step 5: Solve for x
    x = 3,369,068,062.43/65,791.56
  6. Step 6: Final answer
    x = 51,208.21

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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.