Finding the Fourth Proportional to 76,857.75, 115,306.11 and 21,453.75
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Solution
The fourth proportional to 76,857.75, 115,306.11 and 21,453.75 is: 32,186.06
Step by Step Solution
- Step 1: Write the proportion equation
76,857.75 : 115,306.11 = 21,453.75 : x - Step 2: Convert to fraction form
76,857.75/115,306.11 = 21,453.75/x - Step 3: Cross multiply
76,857.75x = 115,306.11 × 21,453.75 - Step 4: Simplify right side
76,857.75x = 2,473,748,457.41 - Step 5: Solve for x
x = 2,473,748,457.41/76,857.75 - Step 6: Final answer
x = 32,186.06
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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.