Home / 71,919.89-99,250.77-40,085.37

Finding the Fourth Proportional to 71,919.89, 99,250.77 and 40,085.37

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Solution

The fourth proportional to 71,919.89, 99,250.77 and 40,085.37 is: 55,318.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,919.89 : 99,250.77 = 40,085.37 : x
  2. Step 2: Convert to fraction form
    71,919.89/99,250.77 = 40,085.37/x
  3. Step 3: Cross multiply
    71,919.89x = 99,250.77 × 40,085.37
  4. Step 4: Simplify right side
    71,919.89x = 3,978,503,763.07
  5. Step 5: Solve for x
    x = 3,978,503,763.07/71,919.89
  6. Step 6: Final answer
    x = 55,318.55

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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.