Finding the Fourth Proportional to 81,237.90, 121,827.00 and 27,914.75
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Solution
The fourth proportional to 81,237.90, 121,827.00 and 27,914.75 is: 41,861.87
Step by Step Solution
- Step 1: Write the proportion equation
81,237.90 : 121,827.00 = 27,914.75 : x - Step 2: Convert to fraction form
81,237.90/121,827.00 = 27,914.75/x - Step 3: Cross multiply
81,237.90x = 121,827.00 × 27,914.75 - Step 4: Simplify right side
81,237.90x = 3,400,770,307.75 - Step 5: Solve for x
x = 3,400,770,307.75/81,237.90 - Step 6: Final answer
x = 41,861.87
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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.