Home / 67,015.89-100,540.44-20,268.77

Finding the Fourth Proportional to 67,015.89, 100,540.44 and 20,268.77

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Solution

The fourth proportional to 67,015.89, 100,540.44 and 20,268.77 is: 30,408.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,015.89 : 100,540.44 = 20,268.77 : x
  2. Step 2: Convert to fraction form
    67,015.89/100,540.44 = 20,268.77/x
  3. Step 3: Cross multiply
    67,015.89x = 100,540.44 × 20,268.77
  4. Step 4: Simplify right side
    67,015.89x = 2,037,830,551.36
  5. Step 5: Solve for x
    x = 2,037,830,551.36/67,015.89
  6. Step 6: Final answer
    x = 30,408.17

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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.