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Finding the Fourth Proportional to 91,610.92, 126,465.06 and 66,649.96

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Solution

The fourth proportional to 91,610.92, 126,465.06 and 66,649.96 is: 92,007.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,610.92 : 126,465.06 = 66,649.96 : x
  2. Step 2: Convert to fraction form
    91,610.92/126,465.06 = 66,649.96/x
  3. Step 3: Cross multiply
    91,610.92x = 126,465.06 × 66,649.96
  4. Step 4: Simplify right side
    91,610.92x = 8,428,891,190.40
  5. Step 5: Solve for x
    x = 8,428,891,190.40/91,610.92
  6. Step 6: Final answer
    x = 92,007.49

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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.