Home / 73,218.60-109,832.70-20,629.80

Finding the Fourth Proportional to 73,218.60, 109,832.70 and 20,629.80

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Solution

The fourth proportional to 73,218.60, 109,832.70 and 20,629.80 is: 30,946.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,218.60 : 109,832.70 = 20,629.80 : x
  2. Step 2: Convert to fraction form
    73,218.60/109,832.70 = 20,629.80/x
  3. Step 3: Cross multiply
    73,218.60x = 109,832.70 × 20,629.80
  4. Step 4: Simplify right side
    73,218.60x = 2,265,826,634.46
  5. Step 5: Solve for x
    x = 2,265,826,634.46/73,218.60
  6. Step 6: Final answer
    x = 30,946.05

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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.