Home / 83,371.08-115,107.78-49,390.56

Finding the Fourth Proportional to 83,371.08, 115,107.78 and 49,390.56

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Solution

The fourth proportional to 83,371.08, 115,107.78 and 49,390.56 is: 68,191.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,371.08 : 115,107.78 = 49,390.56 : x
  2. Step 2: Convert to fraction form
    83,371.08/115,107.78 = 49,390.56/x
  3. Step 3: Cross multiply
    83,371.08x = 115,107.78 × 49,390.56
  4. Step 4: Simplify right side
    83,371.08x = 5,685,237,714.56
  5. Step 5: Solve for x
    x = 5,685,237,714.56/83,371.08
  6. Step 6: Final answer
    x = 68,191.96

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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.