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Finding the Fourth Proportional to 53,872.56, 80,845.74 and 18,812.07

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Solution

The fourth proportional to 53,872.56, 80,845.74 and 18,812.07 is: 28,230.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,872.56 : 80,845.74 = 18,812.07 : x
  2. Step 2: Convert to fraction form
    53,872.56/80,845.74 = 18,812.07/x
  3. Step 3: Cross multiply
    53,872.56x = 80,845.74 × 18,812.07
  4. Step 4: Simplify right side
    53,872.56x = 1,520,875,720.08
  5. Step 5: Solve for x
    x = 1,520,875,720.08/53,872.56
  6. Step 6: Final answer
    x = 28,230.99

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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.