Home / 82,959.36-124,439.13-20,629.86

Finding the Fourth Proportional to 82,959.36, 124,439.13 and 20,629.86

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Solution

The fourth proportional to 82,959.36, 124,439.13 and 20,629.86 is: 30,944.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,959.36 : 124,439.13 = 20,629.86 : x
  2. Step 2: Convert to fraction form
    82,959.36/124,439.13 = 20,629.86/x
  3. Step 3: Cross multiply
    82,959.36x = 124,439.13 × 20,629.86
  4. Step 4: Simplify right side
    82,959.36x = 2,567,161,830.42
  5. Step 5: Solve for x
    x = 2,567,161,830.42/82,959.36
  6. Step 6: Final answer
    x = 30,944.81

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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.