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Finding the Fourth Proportional to 66,540.96, 99,072.48 and 65,610.96

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Solution

The fourth proportional to 66,540.96, 99,072.48 and 65,610.96 is: 97,687.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,540.96 : 99,072.48 = 65,610.96 : x
  2. Step 2: Convert to fraction form
    66,540.96/99,072.48 = 65,610.96/x
  3. Step 3: Cross multiply
    66,540.96x = 99,072.48 × 65,610.96
  4. Step 4: Simplify right side
    66,540.96x = 6,500,240,522.38
  5. Step 5: Solve for x
    x = 6,500,240,522.38/66,540.96
  6. Step 6: Final answer
    x = 97,687.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.