Home / 72,608.21-100,198.06-40,343.13

Finding the Fourth Proportional to 72,608.21, 100,198.06 and 40,343.13

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Solution

The fourth proportional to 72,608.21, 100,198.06 and 40,343.13 is: 55,672.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,608.21 : 100,198.06 = 40,343.13 : x
  2. Step 2: Convert to fraction form
    72,608.21/100,198.06 = 40,343.13/x
  3. Step 3: Cross multiply
    72,608.21x = 100,198.06 × 40,343.13
  4. Step 4: Simplify right side
    72,608.21x = 4,042,303,360.33
  5. Step 5: Solve for x
    x = 4,042,303,360.33/72,608.21
  6. Step 6: Final answer
    x = 55,672.81

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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.