Home / 80,170.79-110,669.76-49,971.15

Finding the Fourth Proportional to 80,170.79, 110,669.76 and 49,971.15

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Solution

The fourth proportional to 80,170.79, 110,669.76 and 49,971.15 is: 68,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,170.79 : 110,669.76 = 49,971.15 : x
  2. Step 2: Convert to fraction form
    80,170.79/110,669.76 = 49,971.15/x
  3. Step 3: Cross multiply
    80,170.79x = 110,669.76 × 49,971.15
  4. Step 4: Simplify right side
    80,170.79x = 5,530,295,177.42
  5. Step 5: Solve for x
    x = 5,530,295,177.42/80,170.79
  6. Step 6: Final answer
    x = 68,981.43

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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.