Finding the Fourth Proportional to 74,031.25, 102,163.94 and 40,497.25
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Solution
The fourth proportional to 74,031.25, 102,163.94 and 40,497.25 is: 55,886.65
Step by Step Solution
- Step 1: Write the proportion equation
74,031.25 : 102,163.94 = 40,497.25 : x - Step 2: Convert to fraction form
74,031.25/102,163.94 = 40,497.25/x - Step 3: Cross multiply
74,031.25x = 102,163.94 × 40,497.25 - Step 4: Simplify right side
74,031.25x = 4,137,358,619.17 - Step 5: Solve for x
x = 4,137,358,619.17/74,031.25 - Step 6: Final answer
x = 55,886.65
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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.