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Finding the Fourth Proportional to 76,994.62, 106,245.66 and 42,998.38

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Solution

The fourth proportional to 76,994.62, 106,245.66 and 42,998.38 is: 59,333.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,994.62 : 106,245.66 = 42,998.38 : x
  2. Step 2: Convert to fraction form
    76,994.62/106,245.66 = 42,998.38/x
  3. Step 3: Cross multiply
    76,994.62x = 106,245.66 × 42,998.38
  4. Step 4: Simplify right side
    76,994.62x = 4,568,391,609.49
  5. Step 5: Solve for x
    x = 4,568,391,609.49/76,994.62
  6. Step 6: Final answer
    x = 59,333.91

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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.