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Finding the Fourth Proportional to 49,670.80, 74,448.60 and 20,069.20

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Solution

The fourth proportional to 49,670.80, 74,448.60 and 20,069.20 is: 30,080.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,670.80 : 74,448.60 = 20,069.20 : x
  2. Step 2: Convert to fraction form
    49,670.80/74,448.60 = 20,069.20/x
  3. Step 3: Cross multiply
    49,670.80x = 74,448.60 × 20,069.20
  4. Step 4: Simplify right side
    49,670.80x = 1,494,123,843.12
  5. Step 5: Solve for x
    x = 1,494,123,843.12/49,670.80
  6. Step 6: Final answer
    x = 30,080.53

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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.