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Finding the Fourth Proportional to 54,085.69, 81,115.93 and 14,645.88

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Solution

The fourth proportional to 54,085.69, 81,115.93 and 14,645.88 is: 21,965.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,085.69 : 81,115.93 = 14,645.88 : x
  2. Step 2: Convert to fraction form
    54,085.69/81,115.93 = 14,645.88/x
  3. Step 3: Cross multiply
    54,085.69x = 81,115.93 × 14,645.88
  4. Step 4: Simplify right side
    54,085.69x = 1,188,014,195.18
  5. Step 5: Solve for x
    x = 1,188,014,195.18/54,085.69
  6. Step 6: Final answer
    x = 21,965.41

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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.