Finding the Fourth Proportional to 72,188.60, 108,210.21 and 30,091.99
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Solution
The fourth proportional to 72,188.60, 108,210.21 and 30,091.99 is: 45,107.68
Step by Step Solution
- Step 1: Write the proportion equation
72,188.60 : 108,210.21 = 30,091.99 : x - Step 2: Convert to fraction form
72,188.60/108,210.21 = 30,091.99/x - Step 3: Cross multiply
72,188.60x = 108,210.21 × 30,091.99 - Step 4: Simplify right side
72,188.60x = 3,256,260,173.85 - Step 5: Solve for x
x = 3,256,260,173.85/72,188.60 - Step 6: Final answer
x = 45,107.68
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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.