Finding the Fourth Proportional to 74,521.08, 102,841.02 and 40,531.68
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Solution
The fourth proportional to 74,521.08, 102,841.02 and 40,531.68 is: 55,934.77
Step by Step Solution
- Step 1: Write the proportion equation
74,521.08 : 102,841.02 = 40,531.68 : x - Step 2: Convert to fraction form
74,521.08/102,841.02 = 40,531.68/x - Step 3: Cross multiply
74,521.08x = 102,841.02 × 40,531.68 - Step 4: Simplify right side
74,521.08x = 4,168,319,313.51 - Step 5: Solve for x
x = 4,168,319,313.51/74,521.08 - Step 6: Final answer
x = 55,934.77
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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.