Finding the Fourth Proportional to 74,163.08, 102,344.45 and 40,170.78
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Solution
The fourth proportional to 74,163.08, 102,344.45 and 40,170.78 is: 55,435.35
Step by Step Solution
- Step 1: Write the proportion equation
74,163.08 : 102,344.45 = 40,170.78 : x - Step 2: Convert to fraction form
74,163.08/102,344.45 = 40,170.78/x - Step 3: Cross multiply
74,163.08x = 102,344.45 × 40,170.78 - Step 4: Simplify right side
74,163.08x = 4,111,256,184.32 - Step 5: Solve for x
x = 4,111,256,184.32/74,163.08 - Step 6: Final answer
x = 55,435.35
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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.