Home / 72,629.28-108,985.68-30,505.68

Finding the Fourth Proportional to 72,629.28, 108,985.68 and 30,505.68

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Solution

The fourth proportional to 72,629.28, 108,985.68 and 30,505.68 is: 45,776.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,629.28 : 108,985.68 = 30,505.68 : x
  2. Step 2: Convert to fraction form
    72,629.28/108,985.68 = 30,505.68/x
  3. Step 3: Cross multiply
    72,629.28x = 108,985.68 × 30,505.68
  4. Step 4: Simplify right side
    72,629.28x = 3,324,682,278.66
  5. Step 5: Solve for x
    x = 3,324,682,278.66/72,629.28
  6. Step 6: Final answer
    x = 45,776.06

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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.