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Finding the Fourth Proportional to 53,885.50, 80,828.39 and 18,825.15

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Solution

The fourth proportional to 53,885.50, 80,828.39 and 18,825.15 is: 28,237.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,885.50 : 80,828.39 = 18,825.15 : x
  2. Step 2: Convert to fraction form
    53,885.50/80,828.39 = 18,825.15/x
  3. Step 3: Cross multiply
    53,885.50x = 80,828.39 × 18,825.15
  4. Step 4: Simplify right side
    53,885.50x = 1,521,606,613.07
  5. Step 5: Solve for x
    x = 1,521,606,613.07/53,885.50
  6. Step 6: Final answer
    x = 28,237.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.