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Finding the Fourth Proportional to 45,343.50, 68,019.17 and 12,511.50

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Solution

The fourth proportional to 45,343.50, 68,019.17 and 12,511.50 is: 18,768.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,343.50 : 68,019.17 = 12,511.50 : x
  2. Step 2: Convert to fraction form
    45,343.50/68,019.17 = 12,511.50/x
  3. Step 3: Cross multiply
    45,343.50x = 68,019.17 × 12,511.50
  4. Step 4: Simplify right side
    45,343.50x = 851,021,845.46
  5. Step 5: Solve for x
    x = 851,021,845.46/45,343.50
  6. Step 6: Final answer
    x = 18,768.33

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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.