Home / 49,878.38-74,831.63-20,317.43

Finding the Fourth Proportional to 49,878.38, 74,831.63 and 20,317.43

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Solution

The fourth proportional to 49,878.38, 74,831.63 and 20,317.43 is: 30,481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,878.38 : 74,831.63 = 20,317.43 : x
  2. Step 2: Convert to fraction form
    49,878.38/74,831.63 = 20,317.43/x
  3. Step 3: Cross multiply
    49,878.38x = 74,831.63 × 20,317.43
  4. Step 4: Simplify right side
    49,878.38x = 1,520,385,928.57
  5. Step 5: Solve for x
    x = 1,520,385,928.57/49,878.38
  6. Step 6: Final answer
    x = 30,481.87

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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.