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Finding the Fourth Proportional to 48,009.72, 72,021.78 and 16,839.48

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Solution

The fourth proportional to 48,009.72, 72,021.78 and 16,839.48 is: 25,261.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,009.72 : 72,021.78 = 16,839.48 : x
  2. Step 2: Convert to fraction form
    48,009.72/72,021.78 = 16,839.48/x
  3. Step 3: Cross multiply
    48,009.72x = 72,021.78 × 16,839.48
  4. Step 4: Simplify right side
    48,009.72x = 1,212,809,323.87
  5. Step 5: Solve for x
    x = 1,212,809,323.87/48,009.72
  6. Step 6: Final answer
    x = 25,261.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.