Home / 43,409.18-65,067.63-20,905.82

Finding the Fourth Proportional to 43,409.18, 65,067.63 and 20,905.82

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Solution

The fourth proportional to 43,409.18, 65,067.63 and 20,905.82 is: 31,336.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,409.18 : 65,067.63 = 20,905.82 : x
  2. Step 2: Convert to fraction form
    43,409.18/65,067.63 = 20,905.82/x
  3. Step 3: Cross multiply
    43,409.18x = 65,067.63 × 20,905.82
  4. Step 4: Simplify right side
    43,409.18x = 1,360,292,323.28
  5. Step 5: Solve for x
    x = 1,360,292,323.28/43,409.18
  6. Step 6: Final answer
    x = 31,336.52

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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.