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Finding the Fourth Proportional to 66,885.43, 100,328.33 and 16,965.56

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Solution

The fourth proportional to 66,885.43, 100,328.33 and 16,965.56 is: 25,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,885.43 : 100,328.33 = 16,965.56 : x
  2. Step 2: Convert to fraction form
    66,885.43/100,328.33 = 16,965.56/x
  3. Step 3: Cross multiply
    66,885.43x = 100,328.33 × 16,965.56
  4. Step 4: Simplify right side
    66,885.43x = 1,702,126,302.31
  5. Step 5: Solve for x
    x = 1,702,126,302.31/66,885.43
  6. Step 6: Final answer
    x = 25,448.39

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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.