Home / 71,917.07-99,245.67-40,085.29

Finding the Fourth Proportional to 71,917.07, 99,245.67 and 40,085.29

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Solution

The fourth proportional to 71,917.07, 99,245.67 and 40,085.29 is: 55,317.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,917.07 : 99,245.67 = 40,085.29 : x
  2. Step 2: Convert to fraction form
    71,917.07/99,245.67 = 40,085.29/x
  3. Step 3: Cross multiply
    71,917.07x = 99,245.67 × 40,085.29
  4. Step 4: Simplify right side
    71,917.07x = 3,978,290,766.54
  5. Step 5: Solve for x
    x = 3,978,290,766.54/71,917.07
  6. Step 6: Final answer
    x = 55,317.75

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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.