Finding the Fourth Proportional to 78,379.11, 108,219.51 and 48,204.99
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Solution
The fourth proportional to 78,379.11, 108,219.51 and 48,204.99 is: 66,557.54
Step by Step Solution
- Step 1: Write the proportion equation
78,379.11 : 108,219.51 = 48,204.99 : x - Step 2: Convert to fraction form
78,379.11/108,219.51 = 48,204.99/x - Step 3: Cross multiply
78,379.11x = 108,219.51 × 48,204.99 - Step 4: Simplify right side
78,379.11x = 5,216,720,397.35 - Step 5: Solve for x
x = 5,216,720,397.35/78,379.11 - Step 6: Final answer
x = 66,557.54
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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.