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Finding the Fourth Proportional to 61,131.92, 91,691.16 and 19,573.52

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Solution

The fourth proportional to 61,131.92, 91,691.16 and 19,573.52 is: 29,358.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,131.92 : 91,691.16 = 19,573.52 : x
  2. Step 2: Convert to fraction form
    61,131.92/91,691.16 = 19,573.52/x
  3. Step 3: Cross multiply
    61,131.92x = 91,691.16 × 19,573.52
  4. Step 4: Simplify right side
    61,131.92x = 1,794,718,754.08
  5. Step 5: Solve for x
    x = 1,794,718,754.08/61,131.92
  6. Step 6: Final answer
    x = 29,358.13

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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.