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Finding the Fourth Proportional to 66,622.88, 91,939.82 and 36,408.22

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Solution

The fourth proportional to 66,622.88, 91,939.82 and 36,408.22 is: 50,243.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,622.88 : 91,939.82 = 36,408.22 : x
  2. Step 2: Convert to fraction form
    66,622.88/91,939.82 = 36,408.22/x
  3. Step 3: Cross multiply
    66,622.88x = 91,939.82 × 36,408.22
  4. Step 4: Simplify right side
    66,622.88x = 3,347,365,193.32
  5. Step 5: Solve for x
    x = 3,347,365,193.32/66,622.88
  6. Step 6: Final answer
    x = 50,243.48

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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.