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Finding the Fourth Proportional to 61,244.91, 91,809.05 and 19,662.75

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Solution

The fourth proportional to 61,244.91, 91,809.05 and 19,662.75 is: 29,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,244.91 : 91,809.05 = 19,662.75 : x
  2. Step 2: Convert to fraction form
    61,244.91/91,809.05 = 19,662.75/x
  3. Step 3: Cross multiply
    61,244.91x = 91,809.05 × 19,662.75
  4. Step 4: Simplify right side
    61,244.91x = 1,805,218,299.57
  5. Step 5: Solve for x
    x = 1,805,218,299.57/61,244.91
  6. Step 6: Final answer
    x = 29,475.40

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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.