Finding the Fourth Proportional to 85,662.09, 118,158.84 and 68,707.02
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Solution
The fourth proportional to 85,662.09, 118,158.84 and 68,707.02 is: 94,771.70
Step by Step Solution
- Step 1: Write the proportion equation
85,662.09 : 118,158.84 = 68,707.02 : x - Step 2: Convert to fraction form
85,662.09/118,158.84 = 68,707.02/x - Step 3: Cross multiply
85,662.09x = 118,158.84 × 68,707.02 - Step 4: Simplify right side
85,662.09x = 8,118,341,783.06 - Step 5: Solve for x
x = 8,118,341,783.06/85,662.09 - Step 6: Final answer
x = 94,771.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.