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Finding the Fourth Proportional to 73,291.20, 109,936.80 and 50,740.80

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Solution

The fourth proportional to 73,291.20, 109,936.80 and 50,740.80 is: 76,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,291.20 : 109,936.80 = 50,740.80 : x
  2. Step 2: Convert to fraction form
    73,291.20/109,936.80 = 50,740.80/x
  3. Step 3: Cross multiply
    73,291.20x = 109,936.80 × 50,740.80
  4. Step 4: Simplify right side
    73,291.20x = 5,578,281,181.44
  5. Step 5: Solve for x
    x = 5,578,281,181.44/73,291.20
  6. Step 6: Final answer
    x = 76,111.20

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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.