Finding the Fourth Proportional to 74,508.08, 102,819.10 and 40,974.08
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Solution
The fourth proportional to 74,508.08, 102,819.10 and 40,974.08 is: 56,543.10
Step by Step Solution
- Step 1: Write the proportion equation
74,508.08 : 102,819.10 = 40,974.08 : x - Step 2: Convert to fraction form
74,508.08/102,819.10 = 40,974.08/x - Step 3: Cross multiply
74,508.08x = 102,819.10 × 40,974.08 - Step 4: Simplify right side
74,508.08x = 4,212,918,028.93 - Step 5: Solve for x
x = 4,212,918,028.93/74,508.08 - Step 6: Final answer
x = 56,543.10
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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.