Home / 67,980.12-102,021.24-34,728

Finding the Fourth Proportional to 67,980.12, 102,021.24 and 34,728

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Solution

The fourth proportional to 67,980.12, 102,021.24 and 34,728 is: 52,118.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,980.12 : 102,021.24 = 34,728 : x
  2. Step 2: Convert to fraction form
    67,980.12/102,021.24 = 34,728/x
  3. Step 3: Cross multiply
    67,980.12x = 102,021.24 × 34,728
  4. Step 4: Simplify right side
    67,980.12x = 3,542,993,622.72
  5. Step 5: Solve for x
    x = 3,542,993,622.72/67,980.12
  6. Step 6: Final answer
    x = 52,118.08

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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.