Finding the Fourth Proportional to 76,803.84, 115,136.64 and 39,755.52
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Solution
The fourth proportional to 76,803.84, 115,136.64 and 39,755.52 is: 59,597.50
Step by Step Solution
- Step 1: Write the proportion equation
76,803.84 : 115,136.64 = 39,755.52 : x - Step 2: Convert to fraction form
76,803.84/115,136.64 = 39,755.52/x - Step 3: Cross multiply
76,803.84x = 115,136.64 × 39,755.52 - Step 4: Simplify right side
76,803.84x = 4,577,316,994.25 - Step 5: Solve for x
x = 4,577,316,994.25/76,803.84 - Step 6: Final answer
x = 59,597.50
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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.