Home / 8,741,640.20-13,120,236.30-5,142,907.40

Finding the Fourth Proportional to 8,741,640.20, 13,120,236.30 and 5,142,907.40

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Solution

The fourth proportional to 8,741,640.20, 13,120,236.30 and 5,142,907.40 is: 7,718,935.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,741,640.20 : 13,120,236.30 = 5,142,907.40 : x
  2. Step 2: Convert to fraction form
    8,741,640.20/13,120,236.30 = 5,142,907.40/x
  3. Step 3: Cross multiply
    8,741,640.20x = 13,120,236.30 × 5,142,907.40
  4. Step 4: Simplify right side
    8,741,640.20x = 67,476,160,357,018.62
  5. Step 5: Solve for x
    x = 67,476,160,357,018.62/8,741,640.20
  6. Step 6: Final answer
    x = 7,718,935.90

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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.