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Finding the Fourth Proportional to 73,494.88, 101,422.80 and 39,960.80

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Solution

The fourth proportional to 73,494.88, 101,422.80 and 39,960.80 is: 55,145.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,494.88 : 101,422.80 = 39,960.80 : x
  2. Step 2: Convert to fraction form
    73,494.88/101,422.80 = 39,960.80/x
  3. Step 3: Cross multiply
    73,494.88x = 101,422.80 × 39,960.80
  4. Step 4: Simplify right side
    73,494.88x = 4,052,936,226.24
  5. Step 5: Solve for x
    x = 4,052,936,226.24/73,494.88
  6. Step 6: Final answer
    x = 55,145.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.