Finding the Fourth Proportional to 287,983.44, 431,925.93 and 77,572.17
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Solution
The fourth proportional to 287,983.44, 431,925.93 and 77,572.17 is: 116,344.99
Step by Step Solution
- Step 1: Write the proportion equation
287,983.44 : 431,925.93 = 77,572.17 : x - Step 2: Convert to fraction form
287,983.44/431,925.93 = 77,572.17/x - Step 3: Cross multiply
287,983.44x = 431,925.93 × 77,572.17 - Step 4: Simplify right side
287,983.44x = 33,505,431,669.37 - Step 5: Solve for x
x = 33,505,431,669.37/287,983.44 - Step 6: Final answer
x = 116,344.99
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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.