Home / 30,902,323.54-42,647,361.94-20,430,145.37

Finding the Fourth Proportional to 30,902,323.54, 42,647,361.94 and 20,430,145.37

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Solution

The fourth proportional to 30,902,323.54, 42,647,361.94 and 20,430,145.37 is: 28,195,025.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,902,323.54 : 42,647,361.94 = 20,430,145.37 : x
  2. Step 2: Convert to fraction form
    30,902,323.54/42,647,361.94 = 20,430,145.37/x
  3. Step 3: Cross multiply
    30,902,323.54x = 42,647,361.94 × 20,430,145.37
  4. Step 4: Simplify right side
    30,902,323.54x = 871,291,804,081,205.25
  5. Step 5: Solve for x
    x = 871,291,804,081,205.25/30,902,323.54
  6. Step 6: Final answer
    x = 28,195,025.62

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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.