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Finding the Fourth Proportional to 68,145.75, 102,222.27 and 21,402.27

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Solution

The fourth proportional to 68,145.75, 102,222.27 and 21,402.27 is: 32,104.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,145.75 : 102,222.27 = 21,402.27 : x
  2. Step 2: Convert to fraction form
    68,145.75/102,222.27 = 21,402.27/x
  3. Step 3: Cross multiply
    68,145.75x = 102,222.27 × 21,402.27
  4. Step 4: Simplify right side
    68,145.75x = 2,187,788,622.55
  5. Step 5: Solve for x
    x = 2,187,788,622.55/68,145.75
  6. Step 6: Final answer
    x = 32,104.55

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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.