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Finding the Fourth Proportional to 49,901.99, 74,885.09 and 19,911.09

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Solution

The fourth proportional to 49,901.99, 74,885.09 and 19,911.09 is: 29,879.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,901.99 : 74,885.09 = 19,911.09 : x
  2. Step 2: Convert to fraction form
    49,901.99/74,885.09 = 19,911.09/x
  3. Step 3: Cross multiply
    49,901.99x = 74,885.09 × 19,911.09
  4. Step 4: Simplify right side
    49,901.99x = 1,491,043,667.09
  5. Step 5: Solve for x
    x = 1,491,043,667.09/49,901.99
  6. Step 6: Final answer
    x = 29,879.45

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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.