Home / 74,945.88-103,305.16-50,739.20

Finding the Fourth Proportional to 74,945.88, 103,305.16 and 50,739.20

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Solution

The fourth proportional to 74,945.88, 103,305.16 and 50,739.20 is: 69,938.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,945.88 : 103,305.16 = 50,739.20 : x
  2. Step 2: Convert to fraction form
    74,945.88/103,305.16 = 50,739.20/x
  3. Step 3: Cross multiply
    74,945.88x = 103,305.16 × 50,739.20
  4. Step 4: Simplify right side
    74,945.88x = 5,241,621,174.27
  5. Step 5: Solve for x
    x = 5,241,621,174.27/74,945.88
  6. Step 6: Final answer
    x = 69,938.75

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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.