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Finding the Fourth Proportional to 39,608, 54,659.04 and 21,944

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Solution

The fourth proportional to 39,608, 54,659.04 and 21,944 is: 30,282.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,608 : 54,659.04 = 21,944 : x
  2. Step 2: Convert to fraction form
    39,608/54,659.04 = 21,944/x
  3. Step 3: Cross multiply
    39,608x = 54,659.04 × 21,944
  4. Step 4: Simplify right side
    39,608x = 1,199,437,973.76
  5. Step 5: Solve for x
    x = 1,199,437,973.76/39,608
  6. Step 6: Final answer
    x = 30,282.72

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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.