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Finding the Fourth Proportional to 66,780.52, 100,170.78 and 27,328.84

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Solution

The fourth proportional to 66,780.52, 100,170.78 and 27,328.84 is: 40,993.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,780.52 : 100,170.78 = 27,328.84 : x
  2. Step 2: Convert to fraction form
    66,780.52/100,170.78 = 27,328.84/x
  3. Step 3: Cross multiply
    66,780.52x = 100,170.78 × 27,328.84
  4. Step 4: Simplify right side
    66,780.52x = 2,737,551,219.30
  5. Step 5: Solve for x
    x = 2,737,551,219.30/66,780.52
  6. Step 6: Final answer
    x = 40,993.26

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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.