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Finding the Fourth Proportional to 39,873.25, 55,023.04 and 21,967.89

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Solution

The fourth proportional to 39,873.25, 55,023.04 and 21,967.89 is: 30,314.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,873.25 : 55,023.04 = 21,967.89 : x
  2. Step 2: Convert to fraction form
    39,873.25/55,023.04 = 21,967.89/x
  3. Step 3: Cross multiply
    39,873.25x = 55,023.04 × 21,967.89
  4. Step 4: Simplify right side
    39,873.25x = 1,208,740,090.19
  5. Step 5: Solve for x
    x = 1,208,740,090.19/39,873.25
  6. Step 6: Final answer
    x = 30,314.57

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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.