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Finding the Fourth Proportional to 39,751.62, 54,858.51 and 21,848.28

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Solution

The fourth proportional to 39,751.62, 54,858.51 and 21,848.28 is: 30,151.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,751.62 : 54,858.51 = 21,848.28 : x
  2. Step 2: Convert to fraction form
    39,751.62/54,858.51 = 21,848.28/x
  3. Step 3: Cross multiply
    39,751.62x = 54,858.51 × 21,848.28
  4. Step 4: Simplify right side
    39,751.62x = 1,198,564,086.86
  5. Step 5: Solve for x
    x = 1,198,564,086.86/39,751.62
  6. Step 6: Final answer
    x = 30,151.33

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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.