Home / 81,065.22-111,838.23-47,067.90

Finding the Fourth Proportional to 81,065.22, 111,838.23 and 47,067.90

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Solution

The fourth proportional to 81,065.22, 111,838.23 and 47,067.90 is: 64,935.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,065.22 : 111,838.23 = 47,067.90 : x
  2. Step 2: Convert to fraction form
    81,065.22/111,838.23 = 47,067.90/x
  3. Step 3: Cross multiply
    81,065.22x = 111,838.23 × 47,067.90
  4. Step 4: Simplify right side
    81,065.22x = 5,263,990,625.82
  5. Step 5: Solve for x
    x = 5,263,990,625.82/81,065.22
  6. Step 6: Final answer
    x = 64,935.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.