Home / 80,091.04-120,677.18-66,356.68

Finding the Fourth Proportional to 80,091.04, 120,677.18 and 66,356.68

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Solution

The fourth proportional to 80,091.04, 120,677.18 and 66,356.68 is: 99,982.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,091.04 : 120,677.18 = 66,356.68 : x
  2. Step 2: Convert to fraction form
    80,091.04/120,677.18 = 66,356.68/x
  3. Step 3: Cross multiply
    80,091.04x = 120,677.18 × 66,356.68
  4. Step 4: Simplify right side
    80,091.04x = 8,007,737,016.56
  5. Step 5: Solve for x
    x = 8,007,737,016.56/80,091.04
  6. Step 6: Final answer
    x = 99,982.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.