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Finding the Fourth Proportional to 71,744.56, 107,616.48 and 18,436.48

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Solution

The fourth proportional to 71,744.56, 107,616.48 and 18,436.48 is: 27,654.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,744.56 : 107,616.48 = 18,436.48 : x
  2. Step 2: Convert to fraction form
    71,744.56/107,616.48 = 18,436.48/x
  3. Step 3: Cross multiply
    71,744.56x = 107,616.48 × 18,436.48
  4. Step 4: Simplify right side
    71,744.56x = 1,984,069,081.19
  5. Step 5: Solve for x
    x = 1,984,069,081.19/71,744.56
  6. Step 6: Final answer
    x = 27,654.63

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1.5x scale

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.