Finding the Fourth Proportional to 139,614.78, 209,419.44 and 39,775.62
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Solution
The fourth proportional to 139,614.78, 209,419.44 and 39,775.62 is: 59,662.65
Step by Step Solution
- Step 1: Write the proportion equation
139,614.78 : 209,419.44 = 39,775.62 : x - Step 2: Convert to fraction form
139,614.78/209,419.44 = 39,775.62/x - Step 3: Cross multiply
139,614.78x = 209,419.44 × 39,775.62 - Step 4: Simplify right side
139,614.78x = 8,329,788,066.05 - Step 5: Solve for x
x = 8,329,788,066.05/139,614.78 - Step 6: Final answer
x = 59,662.65
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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.