Home / 80,971.07-111,740.25-45,163.38

Finding the Fourth Proportional to 80,971.07, 111,740.25 and 45,163.38

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Solution

The fourth proportional to 80,971.07, 111,740.25 and 45,163.38 is: 62,325.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,971.07 : 111,740.25 = 45,163.38 : x
  2. Step 2: Convert to fraction form
    80,971.07/111,740.25 = 45,163.38/x
  3. Step 3: Cross multiply
    80,971.07x = 111,740.25 × 45,163.38
  4. Step 4: Simplify right side
    80,971.07x = 5,046,567,372.05
  5. Step 5: Solve for x
    x = 5,046,567,372.05/80,971.07
  6. Step 6: Final answer
    x = 62,325.56

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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.