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Finding the Fourth Proportional to 39,052.89, 53,893.03 and 21,147.92

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Solution

The fourth proportional to 39,052.89, 53,893.03 and 21,147.92 is: 29,184.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,052.89 : 53,893.03 = 21,147.92 : x
  2. Step 2: Convert to fraction form
    39,052.89/53,893.03 = 21,147.92/x
  3. Step 3: Cross multiply
    39,052.89x = 53,893.03 × 21,147.92
  4. Step 4: Simplify right side
    39,052.89x = 1,139,725,164.66
  5. Step 5: Solve for x
    x = 1,139,725,164.66/39,052.89
  6. Step 6: Final answer
    x = 29,184.14

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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.