Finding the Fourth Proportional to 102,778.92, 141,841.53 and 57,457.08
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Solution
The fourth proportional to 102,778.92, 141,841.53 and 57,457.08 is: 79,294.47
Step by Step Solution
- Step 1: Write the proportion equation
102,778.92 : 141,841.53 = 57,457.08 : x - Step 2: Convert to fraction form
102,778.92/141,841.53 = 57,457.08/x - Step 3: Cross multiply
102,778.92x = 141,841.53 × 57,457.08 - Step 4: Simplify right side
102,778.92x = 8,149,800,136.53 - Step 5: Solve for x
x = 8,149,800,136.53/102,778.92 - Step 6: Final answer
x = 79,294.47
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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.