Home / 79,542,342.20-109,783,499.10-49,786,788.08

Finding the Fourth Proportional to 79,542,342.20, 109,783,499.10 and 49,786,788.08

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Solution

The fourth proportional to 79,542,342.20, 109,783,499.10 and 49,786,788.08 is: 68,715,198.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,542,342.20 : 109,783,499.10 = 49,786,788.08 : x
  2. Step 2: Convert to fraction form
    79,542,342.20/109,783,499.10 = 49,786,788.08/x
  3. Step 3: Cross multiply
    79,542,342.20x = 109,783,499.10 × 49,786,788.08
  4. Step 4: Simplify right side
    79,542,342.20x = 5,465,767,804,372,570
  5. Step 5: Solve for x
    x = 5,465,767,804,372,570/79,542,342.20
  6. Step 6: Final answer
    x = 68,715,198.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.