Home / 82,731.24-124,093.62-20,400.12

Finding the Fourth Proportional to 82,731.24, 124,093.62 and 20,400.12

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Solution

The fourth proportional to 82,731.24, 124,093.62 and 20,400.12 is: 30,599.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,731.24 : 124,093.62 = 20,400.12 : x
  2. Step 2: Convert to fraction form
    82,731.24/124,093.62 = 20,400.12/x
  3. Step 3: Cross multiply
    82,731.24x = 124,093.62 × 20,400.12
  4. Step 4: Simplify right side
    82,731.24x = 2,531,524,739.23
  5. Step 5: Solve for x
    x = 2,531,524,739.23/82,731.24
  6. Step 6: Final answer
    x = 30,599.38

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1.5x scale

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.