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Finding the Fourth Proportional to 68,223.87, 102,339.59 and 20,846.16

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Solution

The fourth proportional to 68,223.87, 102,339.59 and 20,846.16 is: 31,270.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,223.87 : 102,339.59 = 20,846.16 : x
  2. Step 2: Convert to fraction form
    68,223.87/102,339.59 = 20,846.16/x
  3. Step 3: Cross multiply
    68,223.87x = 102,339.59 × 20,846.16
  4. Step 4: Simplify right side
    68,223.87x = 2,133,387,363.24
  5. Step 5: Solve for x
    x = 2,133,387,363.24/68,223.87
  6. Step 6: Final answer
    x = 31,270.39

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1.5x scale

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.