Finding the Fourth Proportional to 77,172.84, 115,666.92 and 39,750.84
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Solution
The fourth proportional to 77,172.84, 115,666.92 and 39,750.84 is: 59,578.70
Step by Step Solution
- Step 1: Write the proportion equation
77,172.84 : 115,666.92 = 39,750.84 : x - Step 2: Convert to fraction form
77,172.84/115,666.92 = 39,750.84/x - Step 3: Cross multiply
77,172.84x = 115,666.92 × 39,750.84 - Step 4: Simplify right side
77,172.84x = 4,597,857,230.21 - Step 5: Solve for x
x = 4,597,857,230.21/77,172.84 - Step 6: Final answer
x = 59,578.70
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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.