Finding the Fourth Proportional to 31,529,609.99, 43,512,152.99 and 19,922,938.55
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Solution
The fourth proportional to 31,529,609.99, 43,512,152.99 and 19,922,938.55 is: 27,494,471.08
Step by Step Solution
- Step 1: Write the proportion equation
31,529,609.99 : 43,512,152.99 = 19,922,938.55 : x - Step 2: Convert to fraction form
31,529,609.99/43,512,152.99 = 19,922,938.55/x - Step 3: Cross multiply
31,529,609.99x = 43,512,152.99 × 19,922,938.55 - Step 4: Simplify right side
31,529,609.99x = 866,889,949,880,793.38 - Step 5: Solve for x
x = 866,889,949,880,793.38/31,529,609.99 - Step 6: Final answer
x = 27,494,471.08
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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.