Home / 80,781.65-111,406.10-50,569.73

Finding the Fourth Proportional to 80,781.65, 111,406.10 and 50,569.73

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Solution

The fourth proportional to 80,781.65, 111,406.10 and 50,569.73 is: 69,740.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,781.65 : 111,406.10 = 50,569.73 : x
  2. Step 2: Convert to fraction form
    80,781.65/111,406.10 = 50,569.73/x
  3. Step 3: Cross multiply
    80,781.65x = 111,406.10 × 50,569.73
  4. Step 4: Simplify right side
    80,781.65x = 5,633,775,966.75
  5. Step 5: Solve for x
    x = 5,633,775,966.75/80,781.65
  6. Step 6: Final answer
    x = 69,740.79

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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.