Finding the Fourth Proportional to 78,418.05, 108,193.05 and 44,421.12
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Solution
The fourth proportional to 78,418.05, 108,193.05 and 44,421.12 is: 61,287.63
Step by Step Solution
- Step 1: Write the proportion equation
78,418.05 : 108,193.05 = 44,421.12 : x - Step 2: Convert to fraction form
78,418.05/108,193.05 = 44,421.12/x - Step 3: Cross multiply
78,418.05x = 108,193.05 × 44,421.12 - Step 4: Simplify right side
78,418.05x = 4,806,056,457.22 - Step 5: Solve for x
x = 4,806,056,457.22/78,418.05 - Step 6: Final answer
x = 61,287.63
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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.