Finding the Fourth Proportional to 112,764.08, 155,614.63 and 61,775.70
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Solution
The fourth proportional to 112,764.08, 155,614.63 and 61,775.70 is: 85,250.57
Step by Step Solution
- Step 1: Write the proportion equation
112,764.08 : 155,614.63 = 61,775.70 : x - Step 2: Convert to fraction form
112,764.08/155,614.63 = 61,775.70/x - Step 3: Cross multiply
112,764.08x = 155,614.63 × 61,775.70 - Step 4: Simplify right side
112,764.08x = 9,613,202,544.05 - Step 5: Solve for x
x = 9,613,202,544.05/112,764.08 - Step 6: Final answer
x = 85,250.57
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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.