Finding the Fourth Proportional to 86,640.26, 129,964.98 and 24,315.62
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Solution
The fourth proportional to 86,640.26, 129,964.98 and 24,315.62 is: 36,474.72
Step by Step Solution
- Step 1: Write the proportion equation
86,640.26 : 129,964.98 = 24,315.62 : x - Step 2: Convert to fraction form
86,640.26/129,964.98 = 24,315.62/x - Step 3: Cross multiply
86,640.26x = 129,964.98 × 24,315.62 - Step 4: Simplify right side
86,640.26x = 3,160,179,066.99 - Step 5: Solve for x
x = 3,160,179,066.99/86,640.26 - Step 6: Final answer
x = 36,474.72
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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.