Home / 82,949.86-124,424.88-20,620.36

Finding the Fourth Proportional to 82,949.86, 124,424.88 and 20,620.36

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Solution

The fourth proportional to 82,949.86, 124,424.88 and 20,620.36 is: 30,930.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,949.86 : 124,424.88 = 20,620.36 : x
  2. Step 2: Convert to fraction form
    82,949.86/124,424.88 = 20,620.36/x
  3. Step 3: Cross multiply
    82,949.86x = 124,424.88 × 20,620.36
  4. Step 4: Simplify right side
    82,949.86x = 2,565,685,818.56
  5. Step 5: Solve for x
    x = 2,565,685,818.56/82,949.86
  6. Step 6: Final answer
    x = 30,930.56

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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.