Finding the Fourth Proportional to 91,294.30, 136,853.97 and 38,631.34
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Solution
The fourth proportional to 91,294.30, 136,853.97 and 38,631.34 is: 57,909.99
Step by Step Solution
- Step 1: Write the proportion equation
91,294.30 : 136,853.97 = 38,631.34 : x - Step 2: Convert to fraction form
91,294.30/136,853.97 = 38,631.34/x - Step 3: Cross multiply
91,294.30x = 136,853.97 × 38,631.34 - Step 4: Simplify right side
91,294.30x = 5,286,852,245.42 - Step 5: Solve for x
x = 5,286,852,245.42/91,294.30 - Step 6: Final answer
x = 57,909.99
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1.5x scale
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.