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Finding the Fourth Proportional to 71,560.98, 98,745.75 and 39,722.04

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Solution

The fourth proportional to 71,560.98, 98,745.75 and 39,722.04 is: 54,811.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,560.98 : 98,745.75 = 39,722.04 : x
  2. Step 2: Convert to fraction form
    71,560.98/98,745.75 = 39,722.04/x
  3. Step 3: Cross multiply
    71,560.98x = 98,745.75 × 39,722.04
  4. Step 4: Simplify right side
    71,560.98x = 3,922,382,631.33
  5. Step 5: Solve for x
    x = 3,922,382,631.33/71,560.98
  6. Step 6: Final answer
    x = 54,811.75

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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.