Home / 30,520,902.12-42,089,986.44-20,048,441.28

Finding the Fourth Proportional to 30,520,902.12, 42,089,986.44 and 20,048,441.28

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Solution

The fourth proportional to 30,520,902.12, 42,089,986.44 and 20,048,441.28 is: 27,647,892.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,520,902.12 : 42,089,986.44 = 20,048,441.28 : x
  2. Step 2: Convert to fraction form
    30,520,902.12/42,089,986.44 = 20,048,441.28/x
  3. Step 3: Cross multiply
    30,520,902.12x = 42,089,986.44 × 20,048,441.28
  4. Step 4: Simplify right side
    30,520,902.12x = 843,838,621,618,336.25
  5. Step 5: Solve for x
    x = 843,838,621,618,336.25/30,520,902.12
  6. Step 6: Final answer
    x = 27,647,892.53

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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.