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Finding the Fourth Proportional to 79,993.51, 119,997.44 and 20,829.69

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Solution

The fourth proportional to 79,993.51, 119,997.44 and 20,829.69 is: 31,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,993.51 : 119,997.44 = 20,829.69 : x
  2. Step 2: Convert to fraction form
    79,993.51/119,997.44 = 20,829.69/x
  3. Step 3: Cross multiply
    79,993.51x = 119,997.44 × 20,829.69
  4. Step 4: Simplify right side
    79,993.51x = 2,499,509,449.96
  5. Step 5: Solve for x
    x = 2,499,509,449.96/79,993.51
  6. Step 6: Final answer
    x = 31,246.40

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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.