Finding the Fourth Proportional to 87,817.65, 121,185.68 and 49,578.63
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Solution
The fourth proportional to 87,817.65, 121,185.68 and 49,578.63 is: 68,417.00
Step by Step Solution
- Step 1: Write the proportion equation
87,817.65 : 121,185.68 = 49,578.63 : x - Step 2: Convert to fraction form
87,817.65/121,185.68 = 49,578.63/x - Step 3: Cross multiply
87,817.65x = 121,185.68 × 49,578.63 - Step 4: Simplify right side
87,817.65x = 6,008,219,742.13 - Step 5: Solve for x
x = 6,008,219,742.13/87,817.65 - Step 6: Final answer
x = 68,417.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.