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Finding the Fourth Proportional to 66,819.32, 92,211.12 and 36,604.80

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Solution

The fourth proportional to 66,819.32, 92,211.12 and 36,604.80 is: 50,514.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,819.32 : 92,211.12 = 36,604.80 : x
  2. Step 2: Convert to fraction form
    66,819.32/92,211.12 = 36,604.80/x
  3. Step 3: Cross multiply
    66,819.32x = 92,211.12 × 36,604.80
  4. Step 4: Simplify right side
    66,819.32x = 3,375,369,605.38
  5. Step 5: Solve for x
    x = 3,375,369,605.38/66,819.32
  6. Step 6: Final answer
    x = 50,514.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.