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Finding the Fourth Proportional to 71,975.75, 99,323.06 and 39,268.22

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Solution

The fourth proportional to 71,975.75, 99,323.06 and 39,268.22 is: 54,188.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,975.75 : 99,323.06 = 39,268.22 : x
  2. Step 2: Convert to fraction form
    71,975.75/99,323.06 = 39,268.22/x
  3. Step 3: Cross multiply
    71,975.75x = 99,323.06 × 39,268.22
  4. Step 4: Simplify right side
    71,975.75x = 3,900,239,771.15
  5. Step 5: Solve for x
    x = 3,900,239,771.15/71,975.75
  6. Step 6: Final answer
    x = 54,188.25

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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.