Home / 80,607,758.46-120,734,407.54-66,616,147.12

Finding the Fourth Proportional to 80,607,758.46, 120,734,407.54 and 66,616,147.12

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Solution

The fourth proportional to 80,607,758.46, 120,734,407.54 and 66,616,147.12 is: 99,777,753.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,607,758.46 : 120,734,407.54 = 66,616,147.12 : x
  2. Step 2: Convert to fraction form
    80,607,758.46/120,734,407.54 = 66,616,147.12/x
  3. Step 3: Cross multiply
    80,607,758.46x = 120,734,407.54 × 66,616,147.12
  4. Step 4: Simplify right side
    80,607,758.46x = 8,042,861,055,138,489
  5. Step 5: Solve for x
    x = 8,042,861,055,138,489/80,607,758.46
  6. Step 6: Final answer
    x = 99,777,753.51

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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.