Finding the Fourth Proportional to 87,678.17, 121,003.29 and 49,445.09
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Solution
The fourth proportional to 87,678.17, 121,003.29 and 49,445.09 is: 68,238.40
Step by Step Solution
- Step 1: Write the proportion equation
87,678.17 : 121,003.29 = 49,445.09 : x - Step 2: Convert to fraction form
87,678.17/121,003.29 = 49,445.09/x - Step 3: Cross multiply
87,678.17x = 121,003.29 × 49,445.09 - Step 4: Simplify right side
87,678.17x = 5,983,017,959.33 - Step 5: Solve for x
x = 5,983,017,959.33/87,678.17 - Step 6: Final answer
x = 68,238.40
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1.5x scale
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.