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Finding the Fourth Proportional to 66,771.20, 100,205.40 and 44,577.20

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Solution

The fourth proportional to 66,771.20, 100,205.40 and 44,577.20 is: 66,898.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,771.20 : 100,205.40 = 44,577.20 : x
  2. Step 2: Convert to fraction form
    66,771.20/100,205.40 = 44,577.20/x
  3. Step 3: Cross multiply
    66,771.20x = 100,205.40 × 44,577.20
  4. Step 4: Simplify right side
    66,771.20x = 4,466,876,156.88
  5. Step 5: Solve for x
    x = 4,466,876,156.88/66,771.20
  6. Step 6: Final answer
    x = 66,898.25

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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.