Finding the Fourth Proportional to 74,278.92, 102,466.74 and 48,781.62
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Solution
The fourth proportional to 74,278.92, 102,466.74 and 48,781.62 is: 67,293.57
Step by Step Solution
- Step 1: Write the proportion equation
74,278.92 : 102,466.74 = 48,781.62 : x - Step 2: Convert to fraction form
74,278.92/102,466.74 = 48,781.62/x - Step 3: Cross multiply
74,278.92x = 102,466.74 × 48,781.62 - Step 4: Simplify right side
74,278.92x = 4,998,493,573.32 - Step 5: Solve for x
x = 4,998,493,573.32/74,278.92 - Step 6: Final answer
x = 67,293.57
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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.