Home / 80,948.99-111,780.11-50,786.17

Finding the Fourth Proportional to 80,948.99, 111,780.11 and 50,786.17

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Solution

The fourth proportional to 80,948.99, 111,780.11 and 50,786.17 is: 70,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,948.99 : 111,780.11 = 50,786.17 : x
  2. Step 2: Convert to fraction form
    80,948.99/111,780.11 = 50,786.17/x
  3. Step 3: Cross multiply
    80,948.99x = 111,780.11 × 50,786.17
  4. Step 4: Simplify right side
    80,948.99x = 5,676,883,669.08
  5. Step 5: Solve for x
    x = 5,676,883,669.08/80,948.99
  6. Step 6: Final answer
    x = 70,129.15

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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.