Finding the Fourth Proportional to 74,338.90, 102,672.88 and 48,958.70
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Solution
The fourth proportional to 74,338.90, 102,672.88 and 48,958.70 is: 67,619.12
Step by Step Solution
- Step 1: Write the proportion equation
74,338.90 : 102,672.88 = 48,958.70 : x - Step 2: Convert to fraction form
74,338.90/102,672.88 = 48,958.70/x - Step 3: Cross multiply
74,338.90x = 102,672.88 × 48,958.70 - Step 4: Simplify right side
74,338.90x = 5,026,730,730.06 - Step 5: Solve for x
x = 5,026,730,730.06/74,338.90 - Step 6: Final answer
x = 67,619.12
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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.