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Finding the Fourth Proportional to 73,512.54, 101,447.37 and 39,978.54

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Solution

The fourth proportional to 73,512.54, 101,447.37 and 39,978.54 is: 55,170.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,512.54 : 101,447.37 = 39,978.54 : x
  2. Step 2: Convert to fraction form
    73,512.54/101,447.37 = 39,978.54/x
  3. Step 3: Cross multiply
    73,512.54x = 101,447.37 × 39,978.54
  4. Step 4: Simplify right side
    73,512.54x = 4,055,717,739.44
  5. Step 5: Solve for x
    x = 4,055,717,739.44/73,512.54
  6. Step 6: Final answer
    x = 55,170.42

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1.5x scale

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.