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Finding the Fourth Proportional to 66,395.64, 99,489.64 and 41,719.80

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Solution

The fourth proportional to 66,395.64, 99,489.64 and 41,719.80 is: 62,514.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,395.64 : 99,489.64 = 41,719.80 : x
  2. Step 2: Convert to fraction form
    66,395.64/99,489.64 = 41,719.80/x
  3. Step 3: Cross multiply
    66,395.64x = 99,489.64 × 41,719.80
  4. Step 4: Simplify right side
    66,395.64x = 4,150,687,882.87
  5. Step 5: Solve for x
    x = 4,150,687,882.87/66,395.64
  6. Step 6: Final answer
    x = 62,514.46

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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.