Home / 77,067.74-115,604.04-20,907.71

Finding the Fourth Proportional to 77,067.74, 115,604.04 and 20,907.71

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Solution

The fourth proportional to 77,067.74, 115,604.04 and 20,907.71 is: 31,362.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,067.74 : 115,604.04 = 20,907.71 : x
  2. Step 2: Convert to fraction form
    77,067.74/115,604.04 = 20,907.71/x
  3. Step 3: Cross multiply
    77,067.74x = 115,604.04 × 20,907.71
  4. Step 4: Simplify right side
    77,067.74x = 2,417,015,165.13
  5. Step 5: Solve for x
    x = 2,417,015,165.13/77,067.74
  6. Step 6: Final answer
    x = 31,362.22

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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.