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Finding the Fourth Proportional to 66,481.16, 91,703.22 and 45,269.96

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Solution

The fourth proportional to 66,481.16, 91,703.22 and 45,269.96 is: 62,444.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,481.16 : 91,703.22 = 45,269.96 : x
  2. Step 2: Convert to fraction form
    66,481.16/91,703.22 = 45,269.96/x
  3. Step 3: Cross multiply
    66,481.16x = 91,703.22 × 45,269.96
  4. Step 4: Simplify right side
    66,481.16x = 4,151,401,101.27
  5. Step 5: Solve for x
    x = 4,151,401,101.27/66,481.16
  6. Step 6: Final answer
    x = 62,444.78

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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.