Home / 77,629.11-107,131.20-43,638.27

Finding the Fourth Proportional to 77,629.11, 107,131.20 and 43,638.27

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Solution

The fourth proportional to 77,629.11, 107,131.20 and 43,638.27 is: 60,222.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,629.11 : 107,131.20 = 43,638.27 : x
  2. Step 2: Convert to fraction form
    77,629.11/107,131.20 = 43,638.27/x
  3. Step 3: Cross multiply
    77,629.11x = 107,131.20 × 43,638.27
  4. Step 4: Simplify right side
    77,629.11x = 4,675,020,231.02
  5. Step 5: Solve for x
    x = 4,675,020,231.02/77,629.11
  6. Step 6: Final answer
    x = 60,222.51

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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.