Home / 31,084,519.94-42,879,416.80-21,805,904.53

Finding the Fourth Proportional to 31,084,519.94, 42,879,416.80 and 21,805,904.53

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Solution

The fourth proportional to 31,084,519.94, 42,879,416.80 and 21,805,904.53 is: 30,080,067.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,084,519.94 : 42,879,416.80 = 21,805,904.53 : x
  2. Step 2: Convert to fraction form
    31,084,519.94/42,879,416.80 = 21,805,904.53/x
  3. Step 3: Cross multiply
    31,084,519.94x = 42,879,416.80 × 21,805,904.53
  4. Step 4: Simplify right side
    31,084,519.94x = 935,024,469,042,878.12
  5. Step 5: Solve for x
    x = 935,024,469,042,878.12/31,084,519.94
  6. Step 6: Final answer
    x = 30,080,067.86

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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.