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Finding the Fourth Proportional to 66,769.80, 92,142.33 and 36,555.30

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Solution

The fourth proportional to 66,769.80, 92,142.33 and 36,555.30 is: 50,446.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,769.80 : 92,142.33 = 36,555.30 : x
  2. Step 2: Convert to fraction form
    66,769.80/92,142.33 = 36,555.30/x
  3. Step 3: Cross multiply
    66,769.80x = 92,142.33 × 36,555.30
  4. Step 4: Simplify right side
    66,769.80x = 3,368,290,515.85
  5. Step 5: Solve for x
    x = 3,368,290,515.85/66,769.80
  6. Step 6: Final answer
    x = 50,446.32

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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.