Home / 40,078,643.94-55,308,297.69-21,743,535.78

Finding the Fourth Proportional to 40,078,643.94, 55,308,297.69 and 21,743,535.78

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Solution

The fourth proportional to 40,078,643.94, 55,308,297.69 and 21,743,535.78 is: 30,005,954.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,078,643.94 : 55,308,297.69 = 21,743,535.78 : x
  2. Step 2: Convert to fraction form
    40,078,643.94/55,308,297.69 = 21,743,535.78/x
  3. Step 3: Cross multiply
    40,078,643.94x = 55,308,297.69 × 21,743,535.78
  4. Step 4: Simplify right side
    40,078,643.94x = 1,202,597,949,753,406.25
  5. Step 5: Solve for x
    x = 1,202,597,949,753,406.25/40,078,643.94
  6. Step 6: Final answer
    x = 30,005,954.08

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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.