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Finding the Fourth Proportional to 79,994.26, 119,991.38 and 20,829.76

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Solution

The fourth proportional to 79,994.26, 119,991.38 and 20,829.76 is: 31,244.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,994.26 : 119,991.38 = 20,829.76 : x
  2. Step 2: Convert to fraction form
    79,994.26/119,991.38 = 20,829.76/x
  3. Step 3: Cross multiply
    79,994.26x = 119,991.38 × 20,829.76
  4. Step 4: Simplify right side
    79,994.26x = 2,499,391,647.47
  5. Step 5: Solve for x
    x = 2,499,391,647.47/79,994.26
  6. Step 6: Final answer
    x = 31,244.64

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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.