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Finding the Fourth Proportional to 33,418.50, 46,117.54 and 19,990.32

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Solution

The fourth proportional to 33,418.50, 46,117.54 and 19,990.32 is: 27,586.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,418.50 : 46,117.54 = 19,990.32 : x
  2. Step 2: Convert to fraction form
    33,418.50/46,117.54 = 19,990.32/x
  3. Step 3: Cross multiply
    33,418.50x = 46,117.54 × 19,990.32
  4. Step 4: Simplify right side
    33,418.50x = 921,904,382.21
  5. Step 5: Solve for x
    x = 921,904,382.21/33,418.50
  6. Step 6: Final answer
    x = 27,586.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.