Home / 66,786.28-92,164.20-38,105.19

Finding the Fourth Proportional to 66,786.28, 92,164.20 and 38,105.19

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Solution

The fourth proportional to 66,786.28, 92,164.20 and 38,105.19 is: 52,584.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.28 : 92,164.20 = 38,105.19 : x
  2. Step 2: Convert to fraction form
    66,786.28/92,164.20 = 38,105.19/x
  3. Step 3: Cross multiply
    66,786.28x = 92,164.20 × 38,105.19
  4. Step 4: Simplify right side
    66,786.28x = 3,511,934,209.30
  5. Step 5: Solve for x
    x = 3,511,934,209.30/66,786.28
  6. Step 6: Final answer
    x = 52,584.67

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Double scale
Find fourth proportional to 66,787.28, 92,165.58 and 38,106.19
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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.