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Finding the Fourth Proportional to 66,678.66, 99,965.97 and 33,381.54

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Solution

The fourth proportional to 66,678.66, 99,965.97 and 33,381.54 is: 50,046.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,678.66 : 99,965.97 = 33,381.54 : x
  2. Step 2: Convert to fraction form
    66,678.66/99,965.97 = 33,381.54/x
  3. Step 3: Cross multiply
    66,678.66x = 99,965.97 × 33,381.54
  4. Step 4: Simplify right side
    66,678.66x = 3,337,018,026.19
  5. Step 5: Solve for x
    x = 3,337,018,026.19/66,678.66
  6. Step 6: Final answer
    x = 50,046.27

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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.