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Finding the Fourth Proportional to 81,654.60, 112,695.66 and 49,841.94

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Solution

The fourth proportional to 81,654.60, 112,695.66 and 49,841.94 is: 68,789.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,654.60 : 112,695.66 = 49,841.94 : x
  2. Step 2: Convert to fraction form
    81,654.60/112,695.66 = 49,841.94/x
  3. Step 3: Cross multiply
    81,654.60x = 112,695.66 × 49,841.94
  4. Step 4: Simplify right side
    81,654.60x = 5,616,970,323.98
  5. Step 5: Solve for x
    x = 5,616,970,323.98/81,654.60
  6. Step 6: Final answer
    x = 68,789.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.