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Finding the Fourth Proportional to 67,649.45, 93,375 and 39,360.60

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Solution

The fourth proportional to 67,649.45, 93,375 and 39,360.60 is: 54,328.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,649.45 : 93,375 = 39,360.60 : x
  2. Step 2: Convert to fraction form
    67,649.45/93,375 = 39,360.60/x
  3. Step 3: Cross multiply
    67,649.45x = 93,375 × 39,360.60
  4. Step 4: Simplify right side
    67,649.45x = 3,675,296,025
  5. Step 5: Solve for x
    x = 3,675,296,025/67,649.45
  6. Step 6: Final answer
    x = 54,328.55

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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.