Home / 72,699.36-109,054.22-19,391.03

Finding the Fourth Proportional to 72,699.36, 109,054.22 and 19,391.03

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Solution

The fourth proportional to 72,699.36, 109,054.22 and 19,391.03 is: 29,087.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,699.36 : 109,054.22 = 19,391.03 : x
  2. Step 2: Convert to fraction form
    72,699.36/109,054.22 = 19,391.03/x
  3. Step 3: Cross multiply
    72,699.36x = 109,054.22 × 19,391.03
  4. Step 4: Simplify right side
    72,699.36x = 2,114,673,418.37
  5. Step 5: Solve for x
    x = 2,114,673,418.37/72,699.36
  6. Step 6: Final answer
    x = 29,087.92

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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.