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Finding the Fourth Proportional to 90,145.43, 124,385.82 and 49,851.32

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Solution

The fourth proportional to 90,145.43, 124,385.82 and 49,851.32 is: 68,786.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,145.43 : 124,385.82 = 49,851.32 : x
  2. Step 2: Convert to fraction form
    90,145.43/124,385.82 = 49,851.32/x
  3. Step 3: Cross multiply
    90,145.43x = 124,385.82 × 49,851.32
  4. Step 4: Simplify right side
    90,145.43x = 6,200,796,694.35
  5. Step 5: Solve for x
    x = 6,200,796,694.35/90,145.43
  6. Step 6: Final answer
    x = 68,786.59

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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.