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Finding the Fourth Proportional to 67,408.03, 101,112.06 and 20,660.91

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Solution

The fourth proportional to 67,408.03, 101,112.06 and 20,660.91 is: 30,991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,408.03 : 101,112.06 = 20,660.91 : x
  2. Step 2: Convert to fraction form
    67,408.03/101,112.06 = 20,660.91/x
  3. Step 3: Cross multiply
    67,408.03x = 101,112.06 × 20,660.91
  4. Step 4: Simplify right side
    67,408.03x = 2,089,066,869.88
  5. Step 5: Solve for x
    x = 2,089,066,869.88/67,408.03
  6. Step 6: Final answer
    x = 30,991.36

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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.