Home / 72,945.19-109,429.45-30,825.68

Finding the Fourth Proportional to 72,945.19, 109,429.45 and 30,825.68

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Solution

The fourth proportional to 72,945.19, 109,429.45 and 30,825.68 is: 46,243.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,945.19 : 109,429.45 = 30,825.68 : x
  2. Step 2: Convert to fraction form
    72,945.19/109,429.45 = 30,825.68/x
  3. Step 3: Cross multiply
    72,945.19x = 109,429.45 × 30,825.68
  4. Step 4: Simplify right side
    72,945.19x = 3,373,236,584.06
  5. Step 5: Solve for x
    x = 3,373,236,584.06/72,945.19
  6. Step 6: Final answer
    x = 46,243.44

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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.