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Finding the Fourth Proportional to 67,338.80, 101,008.20 and 43,719.20

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Solution

The fourth proportional to 67,338.80, 101,008.20 and 43,719.20 is: 65,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,338.80 : 101,008.20 = 43,719.20 : x
  2. Step 2: Convert to fraction form
    67,338.80/101,008.20 = 43,719.20/x
  3. Step 3: Cross multiply
    67,338.80x = 101,008.20 × 43,719.20
  4. Step 4: Simplify right side
    67,338.80x = 4,415,997,697.44
  5. Step 5: Solve for x
    x = 4,415,997,697.44/67,338.80
  6. Step 6: Final answer
    x = 65,578.80

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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.