Finding the Fourth Proportional to 91,965.51, 137,832.84 and 39,313.08
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Solution
The fourth proportional to 91,965.51, 137,832.84 and 39,313.08 is: 58,920.28
Step by Step Solution
- Step 1: Write the proportion equation
91,965.51 : 137,832.84 = 39,313.08 : x - Step 2: Convert to fraction form
91,965.51/137,832.84 = 39,313.08/x - Step 3: Cross multiply
91,965.51x = 137,832.84 × 39,313.08 - Step 4: Simplify right side
91,965.51x = 5,418,633,465.55 - Step 5: Solve for x
x = 5,418,633,465.55/91,965.51 - Step 6: Final answer
x = 58,920.28
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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.