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Finding the Fourth Proportional to 53,976, 80,964 and 17,040

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Solution

The fourth proportional to 53,976, 80,964 and 17,040 is: 25,560

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,976 : 80,964 = 17,040 : x
  2. Step 2: Convert to fraction form
    53,976/80,964 = 17,040/x
  3. Step 3: Cross multiply
    53,976x = 80,964 × 17,040
  4. Step 4: Simplify right side
    53,976x = 1,379,626,560
  5. Step 5: Solve for x
    x = 1,379,626,560/53,976
  6. Step 6: Final answer
    x = 25,560

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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.