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Finding the Fourth Proportional to 39,862, 55,009.56 and 23,104.72

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Solution

The fourth proportional to 39,862, 55,009.56 and 23,104.72 is: 31,884.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,862 : 55,009.56 = 23,104.72 : x
  2. Step 2: Convert to fraction form
    39,862/55,009.56 = 23,104.72/x
  3. Step 3: Cross multiply
    39,862x = 55,009.56 × 23,104.72
  4. Step 4: Simplify right side
    39,862x = 1,270,980,481.12
  5. Step 5: Solve for x
    x = 1,270,980,481.12/39,862
  6. Step 6: Final answer
    x = 31,884.51

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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.