Finding the Fourth Proportional to 71,219.28, 106,834.98 and 18,628.68
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Solution
The fourth proportional to 71,219.28, 106,834.98 and 18,628.68 is: 27,944.61
Step by Step Solution
- Step 1: Write the proportion equation
71,219.28 : 106,834.98 = 18,628.68 : x - Step 2: Convert to fraction form
71,219.28/106,834.98 = 18,628.68/x - Step 3: Cross multiply
71,219.28x = 106,834.98 × 18,628.68 - Step 4: Simplify right side
71,219.28x = 1,990,194,655.23 - Step 5: Solve for x
x = 1,990,194,655.23/71,219.28 - Step 6: Final answer
x = 27,944.61
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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.