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Finding the Fourth Proportional to 74,769.75, 112,154.60 and 22,178.78

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Solution

The fourth proportional to 74,769.75, 112,154.60 and 22,178.78 is: 33,268.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,769.75 : 112,154.60 = 22,178.78 : x
  2. Step 2: Convert to fraction form
    74,769.75/112,154.60 = 22,178.78/x
  3. Step 3: Cross multiply
    74,769.75x = 112,154.60 × 22,178.78
  4. Step 4: Simplify right side
    74,769.75x = 2,487,451,527.72
  5. Step 5: Solve for x
    x = 2,487,451,527.72/74,769.75
  6. Step 6: Final answer
    x = 33,268.15

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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.