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Finding the Fourth Proportional to 66,725.94, 100,085.40 and 16,806

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Solution

The fourth proportional to 66,725.94, 100,085.40 and 16,806 is: 25,208.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,725.94 : 100,085.40 = 16,806 : x
  2. Step 2: Convert to fraction form
    66,725.94/100,085.40 = 16,806/x
  3. Step 3: Cross multiply
    66,725.94x = 100,085.40 × 16,806
  4. Step 4: Simplify right side
    66,725.94x = 1,682,035,232.40
  5. Step 5: Solve for x
    x = 1,682,035,232.40/66,725.94
  6. Step 6: Final answer
    x = 25,208.12

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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.