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Finding the Fourth Proportional to 80,577.40, 120,866.10 and 43,252.60

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Solution

The fourth proportional to 80,577.40, 120,866.10 and 43,252.60 is: 64,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,577.40 : 120,866.10 = 43,252.60 : x
  2. Step 2: Convert to fraction form
    80,577.40/120,866.10 = 43,252.60/x
  3. Step 3: Cross multiply
    80,577.40x = 120,866.10 × 43,252.60
  4. Step 4: Simplify right side
    80,577.40x = 5,227,773,076.86
  5. Step 5: Solve for x
    x = 5,227,773,076.86/80,577.40
  6. Step 6: Final answer
    x = 64,878.90

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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.