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Finding the Fourth Proportional to 71,208.73, 98,270.45 and 39,375.73

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Solution

The fourth proportional to 71,208.73, 98,270.45 and 39,375.73 is: 54,339.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,208.73 : 98,270.45 = 39,375.73 : x
  2. Step 2: Convert to fraction form
    71,208.73/98,270.45 = 39,375.73/x
  3. Step 3: Cross multiply
    71,208.73x = 98,270.45 × 39,375.73
  4. Step 4: Simplify right side
    71,208.73x = 3,869,470,706.18
  5. Step 5: Solve for x
    x = 3,869,470,706.18/71,208.73
  6. Step 6: Final answer
    x = 54,339.84

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Why These Related Problems?

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