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Finding the Fourth Proportional to 80,654.80, 120,982.20 and 51,203.20

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Solution

The fourth proportional to 80,654.80, 120,982.20 and 51,203.20 is: 76,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,654.80 : 120,982.20 = 51,203.20 : x
  2. Step 2: Convert to fraction form
    80,654.80/120,982.20 = 51,203.20/x
  3. Step 3: Cross multiply
    80,654.80x = 120,982.20 × 51,203.20
  4. Step 4: Simplify right side
    80,654.80x = 6,194,675,783.04
  5. Step 5: Solve for x
    x = 6,194,675,783.04/80,654.80
  6. Step 6: Final answer
    x = 76,804.80

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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.