Home / 68,053.23-102,079.85-21,309.75

Finding the Fourth Proportional to 68,053.23, 102,079.85 and 21,309.75

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Solution

The fourth proportional to 68,053.23, 102,079.85 and 21,309.75 is: 31,964.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,053.23 : 102,079.85 = 21,309.75 : x
  2. Step 2: Convert to fraction form
    68,053.23/102,079.85 = 21,309.75/x
  3. Step 3: Cross multiply
    68,053.23x = 102,079.85 × 21,309.75
  4. Step 4: Simplify right side
    68,053.23x = 2,175,295,976.99
  5. Step 5: Solve for x
    x = 2,175,295,976.99/68,053.23
  6. Step 6: Final answer
    x = 31,964.63

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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.