Home / 81,129.44-111,925.32-49,293.20

Finding the Fourth Proportional to 81,129.44, 111,925.32 and 49,293.20

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Solution

The fourth proportional to 81,129.44, 111,925.32 and 49,293.20 is: 68,004.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,129.44 : 111,925.32 = 49,293.20 : x
  2. Step 2: Convert to fraction form
    81,129.44/111,925.32 = 49,293.20/x
  3. Step 3: Cross multiply
    81,129.44x = 111,925.32 × 49,293.20
  4. Step 4: Simplify right side
    81,129.44x = 5,517,157,183.82
  5. Step 5: Solve for x
    x = 5,517,157,183.82/81,129.44
  6. Step 6: Final answer
    x = 68,004.38

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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.