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Finding the Fourth Proportional to 66,739.25, 100,107.69 and 16,818.23

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Solution

The fourth proportional to 66,739.25, 100,107.69 and 16,818.23 is: 25,227.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,739.25 : 100,107.69 = 16,818.23 : x
  2. Step 2: Convert to fraction form
    66,739.25/100,107.69 = 16,818.23/x
  3. Step 3: Cross multiply
    66,739.25x = 100,107.69 × 16,818.23
  4. Step 4: Simplify right side
    66,739.25x = 1,683,633,654.65
  5. Step 5: Solve for x
    x = 1,683,633,654.65/66,739.25
  6. Step 6: Final answer
    x = 25,227.04

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1.5x scale

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.