Home / 72,672,436.44-108,964,747.87-28,959,919.74

Finding the Fourth Proportional to 72,672,436.44, 108,964,747.87 and 28,959,919.74

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Solution

The fourth proportional to 72,672,436.44, 108,964,747.87 and 28,959,919.74 is: 43,422,382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,672,436.44 : 108,964,747.87 = 28,959,919.74 : x
  2. Step 2: Convert to fraction form
    72,672,436.44/108,964,747.87 = 28,959,919.74/x
  3. Step 3: Cross multiply
    72,672,436.44x = 108,964,747.87 × 28,959,919.74
  4. Step 4: Simplify right side
    72,672,436.44x = 3,155,610,352,732,136
  5. Step 5: Solve for x
    x = 3,155,610,352,732,136/72,672,436.44
  6. Step 6: Final answer
    x = 43,422,382.78

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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.