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Finding the Fourth Proportional to 66,809.74, 100,218.04 and 16,890.26

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Solution

The fourth proportional to 66,809.74, 100,218.04 and 16,890.26 is: 25,336.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,809.74 : 100,218.04 = 16,890.26 : x
  2. Step 2: Convert to fraction form
    66,809.74/100,218.04 = 16,890.26/x
  3. Step 3: Cross multiply
    66,809.74x = 100,218.04 × 16,890.26
  4. Step 4: Simplify right side
    66,809.74x = 1,692,708,752.29
  5. Step 5: Solve for x
    x = 1,692,708,752.29/66,809.74
  6. Step 6: Final answer
    x = 25,336.26

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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.