Home / 72,004.08-107,998.72-19,418.88

Finding the Fourth Proportional to 72,004.08, 107,998.72 and 19,418.88

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Solution

The fourth proportional to 72,004.08, 107,998.72 and 19,418.88 is: 29,126.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,004.08 : 107,998.72 = 19,418.88 : x
  2. Step 2: Convert to fraction form
    72,004.08/107,998.72 = 19,418.88/x
  3. Step 3: Cross multiply
    72,004.08x = 107,998.72 × 19,418.88
  4. Step 4: Simplify right side
    72,004.08x = 2,097,214,183.83
  5. Step 5: Solve for x
    x = 2,097,214,183.83/72,004.08
  6. Step 6: Final answer
    x = 29,126.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.