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Finding the Fourth Proportional to 66,791.60, 100,184.60 and 16,870.96

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Solution

The fourth proportional to 66,791.60, 100,184.60 and 16,870.96 is: 25,305.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,791.60 : 100,184.60 = 16,870.96 : x
  2. Step 2: Convert to fraction form
    66,791.60/100,184.60 = 16,870.96/x
  3. Step 3: Cross multiply
    66,791.60x = 100,184.60 × 16,870.96
  4. Step 4: Simplify right side
    66,791.60x = 1,690,210,379.22
  5. Step 5: Solve for x
    x = 1,690,210,379.22/66,791.60
  6. Step 6: Final answer
    x = 25,305.73

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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.