Home / 72,907,218.40-109,213,861.20-45,529,477.60

Finding the Fourth Proportional to 72,907,218.40, 109,213,861.20 and 45,529,477.60

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Solution

The fourth proportional to 72,907,218.40, 109,213,861.20 and 45,529,477.60 is: 68,202,438.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,907,218.40 : 109,213,861.20 = 45,529,477.60 : x
  2. Step 2: Convert to fraction form
    72,907,218.40/109,213,861.20 = 45,529,477.60/x
  3. Step 3: Cross multiply
    72,907,218.40x = 109,213,861.20 × 45,529,477.60
  4. Step 4: Simplify right side
    72,907,218.40x = 4,972,450,047,114,909
  5. Step 5: Solve for x
    x = 4,972,450,047,114,909/72,907,218.40
  6. Step 6: Final answer
    x = 68,202,438.06

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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.