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Finding the Fourth Proportional to 66,722.36, 100,083.62 and 27,279.48

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Solution

The fourth proportional to 66,722.36, 100,083.62 and 27,279.48 is: 40,919.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,722.36 : 100,083.62 = 27,279.48 : x
  2. Step 2: Convert to fraction form
    66,722.36/100,083.62 = 27,279.48/x
  3. Step 3: Cross multiply
    66,722.36x = 100,083.62 × 27,279.48
  4. Step 4: Simplify right side
    66,722.36x = 2,730,228,973.72
  5. Step 5: Solve for x
    x = 2,730,228,973.72/66,722.36
  6. Step 6: Final answer
    x = 40,919.25

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1.5x scale

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.