Home / 71,882,007.20-107,823,010.80-28,782,142.10

Finding the Fourth Proportional to 71,882,007.20, 107,823,010.80 and 28,782,142.10

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Solution

The fourth proportional to 71,882,007.20, 107,823,010.80 and 28,782,142.10 is: 43,173,213.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,882,007.20 : 107,823,010.80 = 28,782,142.10 : x
  2. Step 2: Convert to fraction form
    71,882,007.20/107,823,010.80 = 28,782,142.10/x
  3. Step 3: Cross multiply
    71,882,007.20x = 107,823,010.80 × 28,782,142.10
  4. Step 4: Simplify right side
    71,882,007.20x = 3,103,377,218,495,435
  5. Step 5: Solve for x
    x = 3,103,377,218,495,435/71,882,007.20
  6. Step 6: Final answer
    x = 43,173,213.15

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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.