Home / 72,669.25-108,991.27-20,064.61

Finding the Fourth Proportional to 72,669.25, 108,991.27 and 20,064.61

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Solution

The fourth proportional to 72,669.25, 108,991.27 and 20,064.61 is: 30,093.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,669.25 : 108,991.27 = 20,064.61 : x
  2. Step 2: Convert to fraction form
    72,669.25/108,991.27 = 20,064.61/x
  3. Step 3: Cross multiply
    72,669.25x = 108,991.27 × 20,064.61
  4. Step 4: Simplify right side
    72,669.25x = 2,186,867,325.95
  5. Step 5: Solve for x
    x = 2,186,867,325.95/72,669.25
  6. Step 6: Final answer
    x = 30,093.43

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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.