Home / 80,831.68-111,551.18-45,021.70

Finding the Fourth Proportional to 80,831.68, 111,551.18 and 45,021.70

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Solution

The fourth proportional to 80,831.68, 111,551.18 and 45,021.70 is: 62,131.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,831.68 : 111,551.18 = 45,021.70 : x
  2. Step 2: Convert to fraction form
    80,831.68/111,551.18 = 45,021.70/x
  3. Step 3: Cross multiply
    80,831.68x = 111,551.18 × 45,021.70
  4. Step 4: Simplify right side
    80,831.68x = 5,022,223,760.61
  5. Step 5: Solve for x
    x = 5,022,223,760.61/80,831.68
  6. Step 6: Final answer
    x = 62,131.87

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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.