Finding the Fourth Proportional to 76,676.76, 105,680.92 and 72,248.08
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Solution
The fourth proportional to 76,676.76, 105,680.92 and 72,248.08 is: 99,577.02
Step by Step Solution
- Step 1: Write the proportion equation
76,676.76 : 105,680.92 = 72,248.08 : x - Step 2: Convert to fraction form
76,676.76/105,680.92 = 72,248.08/x - Step 3: Cross multiply
76,676.76x = 105,680.92 × 72,248.08 - Step 4: Simplify right side
76,676.76x = 7,635,243,562.63 - Step 5: Solve for x
x = 7,635,243,562.63/76,676.76 - Step 6: Final answer
x = 99,577.02
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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.