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Finding the Fourth Proportional to 79,999.27, 119,998.91 and 20,834.76

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Solution

The fourth proportional to 79,999.27, 119,998.91 and 20,834.76 is: 31,252.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,999.27 : 119,998.91 = 20,834.76 : x
  2. Step 2: Convert to fraction form
    79,999.27/119,998.91 = 20,834.76/x
  3. Step 3: Cross multiply
    79,999.27x = 119,998.91 × 20,834.76
  4. Step 4: Simplify right side
    79,999.27x = 2,500,148,490.11
  5. Step 5: Solve for x
    x = 2,500,148,490.11/79,999.27
  6. Step 6: Final answer
    x = 31,252.14

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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.