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Finding the Fourth Proportional to 71,588.75, 98,791.04 and 39,756.56

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Solution

The fourth proportional to 71,588.75, 98,791.04 and 39,756.56 is: 54,863.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,588.75 : 98,791.04 = 39,756.56 : x
  2. Step 2: Convert to fraction form
    71,588.75/98,791.04 = 39,756.56/x
  3. Step 3: Cross multiply
    71,588.75x = 98,791.04 × 39,756.56
  4. Step 4: Simplify right side
    71,588.75x = 3,927,591,514.66
  5. Step 5: Solve for x
    x = 3,927,591,514.66/71,588.75
  6. Step 6: Final answer
    x = 54,863.25

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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.