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Finding the Fourth Proportional to 68,220.91, 102,329.04 and 20,834.08

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Solution

The fourth proportional to 68,220.91, 102,329.04 and 20,834.08 is: 31,250.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,220.91 : 102,329.04 = 20,834.08 : x
  2. Step 2: Convert to fraction form
    68,220.91/102,329.04 = 20,834.08/x
  3. Step 3: Cross multiply
    68,220.91x = 102,329.04 × 20,834.08
  4. Step 4: Simplify right side
    68,220.91x = 2,131,931,405.68
  5. Step 5: Solve for x
    x = 2,131,931,405.68/68,220.91
  6. Step 6: Final answer
    x = 31,250.41

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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.