Finding the Fourth Proportional to 74,609.73, 102,968.87 and 55,714.05
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Solution
The fourth proportional to 74,609.73, 102,968.87 and 55,714.05 is: 76,890.94
Step by Step Solution
- Step 1: Write the proportion equation
74,609.73 : 102,968.87 = 55,714.05 : x - Step 2: Convert to fraction form
74,609.73/102,968.87 = 55,714.05/x - Step 3: Cross multiply
74,609.73x = 102,968.87 × 55,714.05 - Step 4: Simplify right side
74,609.73x = 5,736,812,493.05 - Step 5: Solve for x
x = 5,736,812,493.05/74,609.73 - Step 6: Final answer
x = 76,890.94
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1.5x scale
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.