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Finding the Fourth Proportional to 40,074.64, 55,304 and 22,170

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Solution

The fourth proportional to 40,074.64, 55,304 and 22,170 is: 30,595.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,074.64 : 55,304 = 22,170 : x
  2. Step 2: Convert to fraction form
    40,074.64/55,304 = 22,170/x
  3. Step 3: Cross multiply
    40,074.64x = 55,304 × 22,170
  4. Step 4: Simplify right side
    40,074.64x = 1,226,089,680
  5. Step 5: Solve for x
    x = 1,226,089,680/40,074.64
  6. Step 6: Final answer
    x = 30,595.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.