Home / 65,536.25-90,447.36-40,385.75

Finding the Fourth Proportional to 65,536.25, 90,447.36 and 40,385.75

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Solution

The fourth proportional to 65,536.25, 90,447.36 and 40,385.75 is: 55,736.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,536.25 : 90,447.36 = 40,385.75 : x
  2. Step 2: Convert to fraction form
    65,536.25/90,447.36 = 40,385.75/x
  3. Step 3: Cross multiply
    65,536.25x = 90,447.36 × 40,385.75
  4. Step 4: Simplify right side
    65,536.25x = 3,652,784,469.12
  5. Step 5: Solve for x
    x = 3,652,784,469.12/65,536.25
  6. Step 6: Final answer
    x = 55,736.86

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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.