Finding the Fourth Proportional to 102,781.80, 141,833.07 and 57,450.75
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Solution
The fourth proportional to 102,781.80, 141,833.07 and 57,450.75 is: 79,278.79
Step by Step Solution
- Step 1: Write the proportion equation
102,781.80 : 141,833.07 = 57,450.75 : x - Step 2: Convert to fraction form
102,781.80/141,833.07 = 57,450.75/x - Step 3: Cross multiply
102,781.80x = 141,833.07 × 57,450.75 - Step 4: Simplify right side
102,781.80x = 8,148,416,246.30 - Step 5: Solve for x
x = 8,148,416,246.30/102,781.80 - Step 6: Final answer
x = 79,278.79
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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.