Home / 72,749.75-109,129.23-22,831.81

Finding the Fourth Proportional to 72,749.75, 109,129.23 and 22,831.81

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Solution

The fourth proportional to 72,749.75, 109,129.23 and 22,831.81 is: 34,249.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,749.75 : 109,129.23 = 22,831.81 : x
  2. Step 2: Convert to fraction form
    72,749.75/109,129.23 = 22,831.81/x
  3. Step 3: Cross multiply
    72,749.75x = 109,129.23 × 22,831.81
  4. Step 4: Simplify right side
    72,749.75x = 2,491,617,844.81
  5. Step 5: Solve for x
    x = 2,491,617,844.81/72,749.75
  6. Step 6: Final answer
    x = 34,249.16

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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.