Finding the Fourth Proportional to 88,305.12, 121,906.22 and 68,116.68
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Solution
The fourth proportional to 88,305.12, 121,906.22 and 68,116.68 is: 94,035.85
Step by Step Solution
- Step 1: Write the proportion equation
88,305.12 : 121,906.22 = 68,116.68 : x - Step 2: Convert to fraction form
88,305.12/121,906.22 = 68,116.68/x - Step 3: Cross multiply
88,305.12x = 121,906.22 × 68,116.68 - Step 4: Simplify right side
88,305.12x = 8,303,846,637.17 - Step 5: Solve for x
x = 8,303,846,637.17/88,305.12 - Step 6: Final answer
x = 94,035.85
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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.