Home / 72,629.15-108,940.75-20,037.29

Finding the Fourth Proportional to 72,629.15, 108,940.75 and 20,037.29

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Solution

The fourth proportional to 72,629.15, 108,940.75 and 20,037.29 is: 30,055.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,629.15 : 108,940.75 = 20,037.29 : x
  2. Step 2: Convert to fraction form
    72,629.15/108,940.75 = 20,037.29/x
  3. Step 3: Cross multiply
    72,629.15x = 108,940.75 × 20,037.29
  4. Step 4: Simplify right side
    72,629.15x = 2,182,876,805.77
  5. Step 5: Solve for x
    x = 2,182,876,805.77/72,629.15
  6. Step 6: Final answer
    x = 30,055.11

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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.