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Finding the Fourth Proportional to 91,961.96, 126,796.18 and 71,549.96

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Solution

The fourth proportional to 91,961.96, 126,796.18 and 71,549.96 is: 98,652.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,961.96 : 126,796.18 = 71,549.96 : x
  2. Step 2: Convert to fraction form
    91,961.96/126,796.18 = 71,549.96/x
  3. Step 3: Cross multiply
    91,961.96x = 126,796.18 × 71,549.96
  4. Step 4: Simplify right side
    91,961.96x = 9,072,261,607.15
  5. Step 5: Solve for x
    x = 9,072,261,607.15/91,961.96
  6. Step 6: Final answer
    x = 98,652.33

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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.