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Finding the Fourth Proportional to 39,102.93, 53,961.93 and 21,197.97

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Solution

The fourth proportional to 39,102.93, 53,961.93 and 21,197.97 is: 29,253.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,102.93 : 53,961.93 = 21,197.97 : x
  2. Step 2: Convert to fraction form
    39,102.93/53,961.93 = 21,197.97/x
  3. Step 3: Cross multiply
    39,102.93x = 53,961.93 × 21,197.97
  4. Step 4: Simplify right side
    39,102.93x = 1,143,883,373.28
  5. Step 5: Solve for x
    x = 1,143,883,373.28/39,102.93
  6. Step 6: Final answer
    x = 29,253.14

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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.