Finding the Fourth Proportional to 91,642.24, 126,465.52 and 84,118.96
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Solution
The fourth proportional to 91,642.24, 126,465.52 and 84,118.96 is: 116,083.46
Step by Step Solution
- Step 1: Write the proportion equation
91,642.24 : 126,465.52 = 84,118.96 : x - Step 2: Convert to fraction form
91,642.24/126,465.52 = 84,118.96/x - Step 3: Cross multiply
91,642.24x = 126,465.52 × 84,118.96 - Step 4: Simplify right side
91,642.24x = 10,638,148,018.26 - Step 5: Solve for x
x = 10,638,148,018.26/91,642.24 - Step 6: Final answer
x = 116,083.46
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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.