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Finding the Fourth Proportional to 79,990.01, 119,992.19 and 20,826.19

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Solution

The fourth proportional to 79,990.01, 119,992.19 and 20,826.19 is: 31,241.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,990.01 : 119,992.19 = 20,826.19 : x
  2. Step 2: Convert to fraction form
    79,990.01/119,992.19 = 20,826.19/x
  3. Step 3: Cross multiply
    79,990.01x = 119,992.19 × 20,826.19
  4. Step 4: Simplify right side
    79,990.01x = 2,498,980,812.85
  5. Step 5: Solve for x
    x = 2,498,980,812.85/79,990.01
  6. Step 6: Final answer
    x = 31,241.16

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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.