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Finding the Fourth Proportional to 65,308.85, 90,127.22 and 36,634.88

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Solution

The fourth proportional to 65,308.85, 90,127.22 and 36,634.88 is: 50,556.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,308.85 : 90,127.22 = 36,634.88 : x
  2. Step 2: Convert to fraction form
    65,308.85/90,127.22 = 36,634.88/x
  3. Step 3: Cross multiply
    65,308.85x = 90,127.22 × 36,634.88
  4. Step 4: Simplify right side
    65,308.85x = 3,301,799,255.62
  5. Step 5: Solve for x
    x = 3,301,799,255.62/65,308.85
  6. Step 6: Final answer
    x = 50,556.69

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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.