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Finding the Fourth Proportional to 73,912.83, 101,999.67 and 39,921.30

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Solution

The fourth proportional to 73,912.83, 101,999.67 and 39,921.30 is: 55,091.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,912.83 : 101,999.67 = 39,921.30 : x
  2. Step 2: Convert to fraction form
    73,912.83/101,999.67 = 39,921.30/x
  3. Step 3: Cross multiply
    73,912.83x = 101,999.67 × 39,921.30
  4. Step 4: Simplify right side
    73,912.83x = 4,071,959,425.97
  5. Step 5: Solve for x
    x = 4,071,959,425.97/73,912.83
  6. Step 6: Final answer
    x = 55,091.37

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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.