Home / 78,397,311.85-117,611,664.90-43,902,768.22

Finding the Fourth Proportional to 78,397,311.85, 117,611,664.90 and 43,902,768.22

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Solution

The fourth proportional to 78,397,311.85, 117,611,664.90 and 43,902,768.22 is: 65,862,942.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,397,311.85 : 117,611,664.90 = 43,902,768.22 : x
  2. Step 2: Convert to fraction form
    78,397,311.85/117,611,664.90 = 43,902,768.22/x
  3. Step 3: Cross multiply
    78,397,311.85x = 117,611,664.90 × 43,902,768.22
  4. Step 4: Simplify right side
    78,397,311.85x = 5,163,477,664,073,010
  5. Step 5: Solve for x
    x = 5,163,477,664,073,010/78,397,311.85
  6. Step 6: Final answer
    x = 65,862,942.77

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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.