Home / 72,629.10-108,982.35-28,257.30

Finding the Fourth Proportional to 72,629.10, 108,982.35 and 28,257.30

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Solution

The fourth proportional to 72,629.10, 108,982.35 and 28,257.30 is: 42,401.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,629.10 : 108,982.35 = 28,257.30 : x
  2. Step 2: Convert to fraction form
    72,629.10/108,982.35 = 28,257.30/x
  3. Step 3: Cross multiply
    72,629.10x = 108,982.35 × 28,257.30
  4. Step 4: Simplify right side
    72,629.10x = 3,079,546,958.66
  5. Step 5: Solve for x
    x = 3,079,546,958.66/72,629.10
  6. Step 6: Final answer
    x = 42,401.01

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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.