Home / 48,289.80-72,431.10-20,202.60

Finding the Fourth Proportional to 48,289.80, 72,431.10 and 20,202.60

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Solution

The fourth proportional to 48,289.80, 72,431.10 and 20,202.60 is: 30,302.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,289.80 : 72,431.10 = 20,202.60 : x
  2. Step 2: Convert to fraction form
    48,289.80/72,431.10 = 20,202.60/x
  3. Step 3: Cross multiply
    48,289.80x = 72,431.10 × 20,202.60
  4. Step 4: Simplify right side
    48,289.80x = 1,463,296,540.86
  5. Step 5: Solve for x
    x = 1,463,296,540.86/48,289.80
  6. Step 6: Final answer
    x = 30,302.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.