Finding the Fourth Proportional to 74,604.74, 102,921.84 and 49,078.26
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Solution
The fourth proportional to 74,604.74, 102,921.84 and 49,078.26 is: 67,706.49
Step by Step Solution
- Step 1: Write the proportion equation
74,604.74 : 102,921.84 = 49,078.26 : x - Step 2: Convert to fraction form
74,604.74/102,921.84 = 49,078.26/x - Step 3: Cross multiply
74,604.74x = 102,921.84 × 49,078.26 - Step 4: Simplify right side
74,604.74x = 5,051,224,823.20 - Step 5: Solve for x
x = 5,051,224,823.20/74,604.74 - Step 6: Final answer
x = 67,706.49
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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.