Finding the Fourth Proportional to 68,779.38, 103,162.15 and 18,864.49
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Solution
The fourth proportional to 68,779.38, 103,162.15 and 18,864.49 is: 28,294.84
Step by Step Solution
- Step 1: Write the proportion equation
68,779.38 : 103,162.15 = 18,864.49 : x - Step 2: Convert to fraction form
68,779.38/103,162.15 = 18,864.49/x - Step 3: Cross multiply
68,779.38x = 103,162.15 × 18,864.49 - Step 4: Simplify right side
68,779.38x = 1,946,101,347.05 - Step 5: Solve for x
x = 1,946,101,347.05/68,779.38 - Step 6: Final answer
x = 28,294.84
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.