Home / 72,351.72-99,845.37-40,520.64

Finding the Fourth Proportional to 72,351.72, 99,845.37 and 40,520.64

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Solution

The fourth proportional to 72,351.72, 99,845.37 and 40,520.64 is: 55,918.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,351.72 : 99,845.37 = 40,520.64 : x
  2. Step 2: Convert to fraction form
    72,351.72/99,845.37 = 40,520.64/x
  3. Step 3: Cross multiply
    72,351.72x = 99,845.37 × 40,520.64
  4. Step 4: Simplify right side
    72,351.72x = 4,045,798,293.44
  5. Step 5: Solve for x
    x = 4,045,798,293.44/72,351.72
  6. Step 6: Final answer
    x = 55,918.48

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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.