Home / 40,078,503.03-55,308,103.24-21,743,394.87

Finding the Fourth Proportional to 40,078,503.03, 55,308,103.24 and 21,743,394.87

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Solution

The fourth proportional to 40,078,503.03, 55,308,103.24 and 21,743,394.87 is: 30,005,759.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,078,503.03 : 55,308,103.24 = 21,743,394.87 : x
  2. Step 2: Convert to fraction form
    40,078,503.03/55,308,103.24 = 21,743,394.87/x
  3. Step 3: Cross multiply
    40,078,503.03x = 55,308,103.24 × 21,743,394.87
  4. Step 4: Simplify right side
    40,078,503.03x = 1,202,585,928,451,862.25
  5. Step 5: Solve for x
    x = 1,202,585,928,451,862.25/40,078,503.03
  6. Step 6: Final answer
    x = 30,005,759.63

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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.