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Finding the Fourth Proportional to 66,906.40, 100,165.20 and 44,744.80

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Solution

The fourth proportional to 66,906.40, 100,165.20 and 44,744.80 is: 66,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,906.40 : 100,165.20 = 44,744.80 : x
  2. Step 2: Convert to fraction form
    66,906.40/100,165.20 = 44,744.80/x
  3. Step 3: Cross multiply
    66,906.40x = 100,165.20 × 44,744.80
  4. Step 4: Simplify right side
    66,906.40x = 4,481,871,840.96
  5. Step 5: Solve for x
    x = 4,481,871,840.96/66,906.40
  6. Step 6: Final answer
    x = 66,987.19

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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.