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Finding the Fourth Proportional to 71,928,002.80, 107,892,004.20 and 47,694,293.20

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Solution

The fourth proportional to 71,928,002.80, 107,892,004.20 and 47,694,293.20 is: 71,541,439.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,928,002.80 : 107,892,004.20 = 47,694,293.20 : x
  2. Step 2: Convert to fraction form
    71,928,002.80/107,892,004.20 = 47,694,293.20/x
  3. Step 3: Cross multiply
    71,928,002.80x = 107,892,004.20 × 47,694,293.20
  4. Step 4: Simplify right side
    71,928,002.80x = 5,145,832,882,250,432
  5. Step 5: Solve for x
    x = 5,145,832,882,250,432/71,928,002.80
  6. Step 6: Final answer
    x = 71,541,439.80

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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.