Home / 80,831.18-111,550.49-45,021.20

Finding the Fourth Proportional to 80,831.18, 111,550.49 and 45,021.20

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Solution

The fourth proportional to 80,831.18, 111,550.49 and 45,021.20 is: 62,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,831.18 : 111,550.49 = 45,021.20 : x
  2. Step 2: Convert to fraction form
    80,831.18/111,550.49 = 45,021.20/x
  3. Step 3: Cross multiply
    80,831.18x = 111,550.49 × 45,021.20
  4. Step 4: Simplify right side
    80,831.18x = 5,022,136,920.39
  5. Step 5: Solve for x
    x = 5,022,136,920.39/80,831.18
  6. Step 6: Final answer
    x = 62,131.18

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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.