Finding the Fourth Proportional to 81,212.19, 121,842.87 and 36,827.02
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Solution
The fourth proportional to 81,212.19, 121,842.87 and 36,827.02 is: 55,251.68
Step by Step Solution
- Step 1: Write the proportion equation
81,212.19 : 121,842.87 = 36,827.02 : x - Step 2: Convert to fraction form
81,212.19/121,842.87 = 36,827.02/x - Step 3: Cross multiply
81,212.19x = 121,842.87 × 36,827.02 - Step 4: Simplify right side
81,212.19x = 4,487,109,810.35 - Step 5: Solve for x
x = 4,487,109,810.35/81,212.19 - Step 6: Final answer
x = 55,251.68
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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.