Home / 68,216.36-102,328.33-20,838.65

Finding the Fourth Proportional to 68,216.36, 102,328.33 and 20,838.65

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Solution

The fourth proportional to 68,216.36, 102,328.33 and 20,838.65 is: 31,259.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,216.36 : 102,328.33 = 20,838.65 : x
  2. Step 2: Convert to fraction form
    68,216.36/102,328.33 = 20,838.65/x
  3. Step 3: Cross multiply
    68,216.36x = 102,328.33 × 20,838.65
  4. Step 4: Simplify right side
    68,216.36x = 2,132,383,690.22
  5. Step 5: Solve for x
    x = 2,132,383,690.22/68,216.36
  6. Step 6: Final answer
    x = 31,259.13

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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.