Home / 69,679,719.90-104,512,826.12-21,158,000.22

Finding the Fourth Proportional to 69,679,719.90, 104,512,826.12 and 21,158,000.22

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Solution

The fourth proportional to 69,679,719.90, 104,512,826.12 and 21,158,000.22 is: 31,734,949.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,679,719.90 : 104,512,826.12 = 21,158,000.22 : x
  2. Step 2: Convert to fraction form
    69,679,719.90/104,512,826.12 = 21,158,000.22/x
  3. Step 3: Cross multiply
    69,679,719.90x = 104,512,826.12 × 21,158,000.22
  4. Step 4: Simplify right side
    69,679,719.90x = 2,211,282,397,933,991.50
  5. Step 5: Solve for x
    x = 2,211,282,397,933,991.50/69,679,719.90
  6. Step 6: Final answer
    x = 31,734,949.58

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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.