Finding the Fourth Proportional to 78,505.58, 117,755.62 and 22,345.99
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Solution
The fourth proportional to 78,505.58, 117,755.62 and 22,345.99 is: 33,518.20
Step by Step Solution
- Step 1: Write the proportion equation
78,505.58 : 117,755.62 = 22,345.99 : x - Step 2: Convert to fraction form
78,505.58/117,755.62 = 22,345.99/x - Step 3: Cross multiply
78,505.58x = 117,755.62 × 22,345.99 - Step 4: Simplify right side
78,505.58x = 2,631,365,556.71 - Step 5: Solve for x
x = 2,631,365,556.71/78,505.58 - Step 6: Final answer
x = 33,518.20
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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.