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Finding the Fourth Proportional to 66,653.46, 100,005.44 and 40,018.05

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Solution

The fourth proportional to 66,653.46, 100,005.44 and 40,018.05 is: 60,042.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,653.46 : 100,005.44 = 40,018.05 : x
  2. Step 2: Convert to fraction form
    66,653.46/100,005.44 = 40,018.05/x
  3. Step 3: Cross multiply
    66,653.46x = 100,005.44 × 40,018.05
  4. Step 4: Simplify right side
    66,653.46x = 4,002,021,998.07
  5. Step 5: Solve for x
    x = 4,002,021,998.07/66,653.46
  6. Step 6: Final answer
    x = 60,042.23

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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.