Home / 53,851-80,766.75-18,800.68

Finding the Fourth Proportional to 53,851, 80,766.75 and 18,800.68

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Solution

The fourth proportional to 53,851, 80,766.75 and 18,800.68 is: 28,197.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,851 : 80,766.75 = 18,800.68 : x
  2. Step 2: Convert to fraction form
    53,851/80,766.75 = 18,800.68/x
  3. Step 3: Cross multiply
    53,851x = 80,766.75 × 18,800.68
  4. Step 4: Simplify right side
    53,851x = 1,518,469,821.39
  5. Step 5: Solve for x
    x = 1,518,469,821.39/53,851
  6. Step 6: Final answer
    x = 28,197.62

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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.