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Finding the Fourth Proportional to 39,046.71, 53,884.39 and 21,141.71

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Solution

The fourth proportional to 39,046.71, 53,884.39 and 21,141.71 is: 29,175.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,046.71 : 53,884.39 = 21,141.71 : x
  2. Step 2: Convert to fraction form
    39,046.71/53,884.39 = 21,141.71/x
  3. Step 3: Cross multiply
    39,046.71x = 53,884.39 × 21,141.71
  4. Step 4: Simplify right side
    39,046.71x = 1,139,208,146.91
  5. Step 5: Solve for x
    x = 1,139,208,146.91/39,046.71
  6. Step 6: Final answer
    x = 29,175.52

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