Finding the Fourth Proportional to 71,688.63, 107,518.52 and 68,132.03
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Solution
The fourth proportional to 71,688.63, 107,518.52 and 68,132.03 is: 102,184.32
Step by Step Solution
- Step 1: Write the proportion equation
71,688.63 : 107,518.52 = 68,132.03 : x - Step 2: Convert to fraction form
71,688.63/107,518.52 = 68,132.03/x - Step 3: Cross multiply
71,688.63x = 107,518.52 × 68,132.03 - Step 4: Simplify right side
71,688.63x = 7,325,454,151.94 - Step 5: Solve for x
x = 7,325,454,151.94/71,688.63 - Step 6: Final answer
x = 102,184.32
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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.