Home / 71,215.22-106,814.67-18,629.78

Finding the Fourth Proportional to 71,215.22, 106,814.67 and 18,629.78

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Solution

The fourth proportional to 71,215.22, 106,814.67 and 18,629.78 is: 27,942.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,215.22 : 106,814.67 = 18,629.78 : x
  2. Step 2: Convert to fraction form
    71,215.22/106,814.67 = 18,629.78/x
  3. Step 3: Cross multiply
    71,215.22x = 106,814.67 × 18,629.78
  4. Step 4: Simplify right side
    71,215.22x = 1,989,933,802.87
  5. Step 5: Solve for x
    x = 1,989,933,802.87/71,215.22
  6. Step 6: Final answer
    x = 27,942.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.