Home / 72,629.15-100,236.78-40,797.90

Finding the Fourth Proportional to 72,629.15, 100,236.78 and 40,797.90

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Solution

The fourth proportional to 72,629.15, 100,236.78 and 40,797.90 is: 56,305.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,629.15 : 100,236.78 = 40,797.90 : x
  2. Step 2: Convert to fraction form
    72,629.15/100,236.78 = 40,797.90/x
  3. Step 3: Cross multiply
    72,629.15x = 100,236.78 × 40,797.90
  4. Step 4: Simplify right side
    72,629.15x = 4,089,450,126.76
  5. Step 5: Solve for x
    x = 4,089,450,126.76/72,629.15
  6. Step 6: Final answer
    x = 56,305.91

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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.