Home / 53,989.74-80,976.78-20,718.18

Finding the Fourth Proportional to 53,989.74, 80,976.78 and 20,718.18

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Solution

The fourth proportional to 53,989.74, 80,976.78 and 20,718.18 is: 31,074.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,989.74 : 80,976.78 = 20,718.18 : x
  2. Step 2: Convert to fraction form
    53,989.74/80,976.78 = 20,718.18/x
  3. Step 3: Cross multiply
    53,989.74x = 80,976.78 × 20,718.18
  4. Step 4: Simplify right side
    53,989.74x = 1,677,691,503.86
  5. Step 5: Solve for x
    x = 1,677,691,503.86/53,989.74
  6. Step 6: Final answer
    x = 31,074.27

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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.