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Finding the Fourth Proportional to 45,608.70, 68,376.60 and 19,291.80

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Solution

The fourth proportional to 45,608.70, 68,376.60 and 19,291.80 is: 28,922.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,608.70 : 68,376.60 = 19,291.80 : x
  2. Step 2: Convert to fraction form
    45,608.70/68,376.60 = 19,291.80/x
  3. Step 3: Cross multiply
    45,608.70x = 68,376.60 × 19,291.80
  4. Step 4: Simplify right side
    45,608.70x = 1,319,107,691.88
  5. Step 5: Solve for x
    x = 1,319,107,691.88/45,608.70
  6. Step 6: Final answer
    x = 28,922.28

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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.