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Finding the Fourth Proportional to 92,912.93, 139,369.40 and 40,321.25

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Solution

The fourth proportional to 92,912.93, 139,369.40 and 40,321.25 is: 60,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,912.93 : 139,369.40 = 40,321.25 : x
  2. Step 2: Convert to fraction form
    92,912.93/139,369.40 = 40,321.25/x
  3. Step 3: Cross multiply
    92,912.93x = 139,369.40 × 40,321.25
  4. Step 4: Simplify right side
    92,912.93x = 5,619,548,419.75
  5. Step 5: Solve for x
    x = 5,619,548,419.75/92,912.93
  6. Step 6: Final answer
    x = 60,481.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.