Home / 80,831.28-121,265.96-25,427.28

Finding the Fourth Proportional to 80,831.28, 121,265.96 and 25,427.28

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Solution

The fourth proportional to 80,831.28, 121,265.96 and 25,427.28 is: 38,146.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,831.28 : 121,265.96 = 25,427.28 : x
  2. Step 2: Convert to fraction form
    80,831.28/121,265.96 = 25,427.28/x
  3. Step 3: Cross multiply
    80,831.28x = 121,265.96 × 25,427.28
  4. Step 4: Simplify right side
    80,831.28x = 3,083,463,519.39
  5. Step 5: Solve for x
    x = 3,083,463,519.39/80,831.28
  6. Step 6: Final answer
    x = 38,146.91

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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.