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Finding the Fourth Proportional to 67,754.48, 101,641.56 and 21,011.12

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Solution

The fourth proportional to 67,754.48, 101,641.56 and 21,011.12 is: 31,519.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,754.48 : 101,641.56 = 21,011.12 : x
  2. Step 2: Convert to fraction form
    67,754.48/101,641.56 = 21,011.12/x
  3. Step 3: Cross multiply
    67,754.48x = 101,641.56 × 21,011.12
  4. Step 4: Simplify right side
    67,754.48x = 2,135,603,014.15
  5. Step 5: Solve for x
    x = 2,135,603,014.15/67,754.48
  6. Step 6: Final answer
    x = 31,519.73

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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.