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Finding the Fourth Proportional to 66,770.80, 92,143.71 and 36,556.30

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Solution

The fourth proportional to 66,770.80, 92,143.71 and 36,556.30 is: 50,447.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,770.80 : 92,143.71 = 36,556.30 : x
  2. Step 2: Convert to fraction form
    66,770.80/92,143.71 = 36,556.30/x
  3. Step 3: Cross multiply
    66,770.80x = 92,143.71 × 36,556.30
  4. Step 4: Simplify right side
    66,770.80x = 3,368,433,105.87
  5. Step 5: Solve for x
    x = 3,368,433,105.87/66,770.80
  6. Step 6: Final answer
    x = 50,447.70

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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.