Home / 79,511.22-109,679.78-49,651.38

Finding the Fourth Proportional to 79,511.22, 109,679.78 and 49,651.38

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Solution

The fourth proportional to 79,511.22, 109,679.78 and 49,651.38 is: 68,490.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,511.22 : 109,679.78 = 49,651.38 : x
  2. Step 2: Convert to fraction form
    79,511.22/109,679.78 = 49,651.38/x
  3. Step 3: Cross multiply
    79,511.22x = 109,679.78 × 49,651.38
  4. Step 4: Simplify right side
    79,511.22x = 5,445,752,435.10
  5. Step 5: Solve for x
    x = 5,445,752,435.10/79,511.22
  6. Step 6: Final answer
    x = 68,490.36

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1.5x scale

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.