Home / 77,198.36-115,785.69-21,042.98

Finding the Fourth Proportional to 77,198.36, 115,785.69 and 21,042.98

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Solution

The fourth proportional to 77,198.36, 115,785.69 and 21,042.98 is: 31,561.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,198.36 : 115,785.69 = 21,042.98 : x
  2. Step 2: Convert to fraction form
    77,198.36/115,785.69 = 21,042.98/x
  3. Step 3: Cross multiply
    77,198.36x = 115,785.69 × 21,042.98
  4. Step 4: Simplify right side
    77,198.36x = 2,436,475,958.96
  5. Step 5: Solve for x
    x = 2,436,475,958.96/77,198.36
  6. Step 6: Final answer
    x = 31,561.24

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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.