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Finding the Fourth Proportional to 68,968, 95,175.93 and 39,160

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Solution

The fourth proportional to 68,968, 95,175.93 and 39,160 is: 54,040.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,968 : 95,175.93 = 39,160 : x
  2. Step 2: Convert to fraction form
    68,968/95,175.93 = 39,160/x
  3. Step 3: Cross multiply
    68,968x = 95,175.93 × 39,160
  4. Step 4: Simplify right side
    68,968x = 3,727,089,418.80
  5. Step 5: Solve for x
    x = 3,727,089,418.80/68,968
  6. Step 6: Final answer
    x = 54,040.85

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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.