Home / 8,741,638.70-13,120,234.05-5,142,905.90

Finding the Fourth Proportional to 8,741,638.70, 13,120,234.05 and 5,142,905.90

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Solution

The fourth proportional to 8,741,638.70, 13,120,234.05 and 5,142,905.90 is: 7,718,933.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,741,638.70 : 13,120,234.05 = 5,142,905.90 : x
  2. Step 2: Convert to fraction form
    8,741,638.70/13,120,234.05 = 5,142,905.90/x
  3. Step 3: Cross multiply
    8,741,638.70x = 13,120,234.05 × 5,142,905.90
  4. Step 4: Simplify right side
    8,741,638.70x = 67,476,129,105,125.91
  5. Step 5: Solve for x
    x = 67,476,129,105,125.91/8,741,638.70
  6. Step 6: Final answer
    x = 7,718,933.65

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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.