Home / 53,912.32-80,881.94-20,635

Finding the Fourth Proportional to 53,912.32, 80,881.94 and 20,635

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Solution

The fourth proportional to 53,912.32, 80,881.94 and 20,635 is: 30,957.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,912.32 : 80,881.94 = 20,635 : x
  2. Step 2: Convert to fraction form
    53,912.32/80,881.94 = 20,635/x
  3. Step 3: Cross multiply
    53,912.32x = 80,881.94 × 20,635
  4. Step 4: Simplify right side
    53,912.32x = 1,668,998,831.90
  5. Step 5: Solve for x
    x = 1,668,998,831.90/53,912.32
  6. Step 6: Final answer
    x = 30,957.65

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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.