Home / 30,902,325.70-42,647,364.92-20,430,147.53

Finding the Fourth Proportional to 30,902,325.70, 42,647,364.92 and 20,430,147.53

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Solution

The fourth proportional to 30,902,325.70, 42,647,364.92 and 20,430,147.53 is: 28,195,028.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,902,325.70 : 42,647,364.92 = 20,430,147.53 : x
  2. Step 2: Convert to fraction form
    30,902,325.70/42,647,364.92 = 20,430,147.53/x
  3. Step 3: Cross multiply
    30,902,325.70x = 42,647,364.92 × 20,430,147.53
  4. Step 4: Simplify right side
    30,902,325.70x = 871,291,957,081,346.75
  5. Step 5: Solve for x
    x = 871,291,957,081,346.75/30,902,325.70
  6. Step 6: Final answer
    x = 28,195,028.61

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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.