Home / 80,731.18-111,378.94-50,505.03

Finding the Fourth Proportional to 80,731.18, 111,378.94 and 50,505.03

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Solution

The fourth proportional to 80,731.18, 111,378.94 and 50,505.03 is: 69,678.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,731.18 : 111,378.94 = 50,505.03 : x
  2. Step 2: Convert to fraction form
    80,731.18/111,378.94 = 50,505.03/x
  3. Step 3: Cross multiply
    80,731.18x = 111,378.94 × 50,505.03
  4. Step 4: Simplify right side
    80,731.18x = 5,625,196,706.07
  5. Step 5: Solve for x
    x = 5,625,196,706.07/80,731.18
  6. Step 6: Final answer
    x = 69,678.12

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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.