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Finding the Fourth Proportional to 66,499.78, 99,663.06 and 27,010.75

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Solution

The fourth proportional to 66,499.78, 99,663.06 and 27,010.75 is: 40,480.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,499.78 : 99,663.06 = 27,010.75 : x
  2. Step 2: Convert to fraction form
    66,499.78/99,663.06 = 27,010.75/x
  3. Step 3: Cross multiply
    66,499.78x = 99,663.06 × 27,010.75
  4. Step 4: Simplify right side
    66,499.78x = 2,691,973,997.90
  5. Step 5: Solve for x
    x = 2,691,973,997.90/66,499.78
  6. Step 6: Final answer
    x = 40,480.95

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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.