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Finding the Fourth Proportional to 66,855.70, 100,280.99 and 16,937.56

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Solution

The fourth proportional to 66,855.70, 100,280.99 and 16,937.56 is: 25,405.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,855.70 : 100,280.99 = 16,937.56 : x
  2. Step 2: Convert to fraction form
    66,855.70/100,280.99 = 16,937.56/x
  3. Step 3: Cross multiply
    66,855.70x = 100,280.99 × 16,937.56
  4. Step 4: Simplify right side
    66,855.70x = 1,698,515,200.30
  5. Step 5: Solve for x
    x = 1,698,515,200.30/66,855.70
  6. Step 6: Final answer
    x = 25,405.69

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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.