Home / 72,831.13-109,246.69-20,241.07

Finding the Fourth Proportional to 72,831.13, 109,246.69 and 20,241.07

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Solution

The fourth proportional to 72,831.13, 109,246.69 and 20,241.07 is: 30,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,831.13 : 109,246.69 = 20,241.07 : x
  2. Step 2: Convert to fraction form
    72,831.13/109,246.69 = 20,241.07/x
  3. Step 3: Cross multiply
    72,831.13x = 109,246.69 × 20,241.07
  4. Step 4: Simplify right side
    72,831.13x = 2,211,269,899.56
  5. Step 5: Solve for x
    x = 2,211,269,899.56/72,831.13
  6. Step 6: Final answer
    x = 30,361.60

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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.