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Finding the Fourth Proportional to 61,252.52, 91,859.33 and 19,689.80

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Solution

The fourth proportional to 61,252.52, 91,859.33 and 19,689.80 is: 29,528.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,252.52 : 91,859.33 = 19,689.80 : x
  2. Step 2: Convert to fraction form
    61,252.52/91,859.33 = 19,689.80/x
  3. Step 3: Cross multiply
    61,252.52x = 91,859.33 × 19,689.80
  4. Step 4: Simplify right side
    61,252.52x = 1,808,691,278.09
  5. Step 5: Solve for x
    x = 1,808,691,278.09/61,252.52
  6. Step 6: Final answer
    x = 29,528.44

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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.