Finding the Fourth Proportional to 77,918.64, 107,527.80 and 49,640.80
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Solution
The fourth proportional to 77,918.64, 107,527.80 and 49,640.80 is: 68,504.35
Step by Step Solution
- Step 1: Write the proportion equation
77,918.64 : 107,527.80 = 49,640.80 : x - Step 2: Convert to fraction form
77,918.64/107,527.80 = 49,640.80/x - Step 3: Cross multiply
77,918.64x = 107,527.80 × 49,640.80 - Step 4: Simplify right side
77,918.64x = 5,337,766,014.24 - Step 5: Solve for x
x = 5,337,766,014.24/77,918.64 - Step 6: Final answer
x = 68,504.35
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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.