Finding the Fourth Proportional to 74,920.23, 112,396.77 and 28,173.09
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Solution
The fourth proportional to 74,920.23, 112,396.77 and 28,173.09 is: 42,265.81
Step by Step Solution
- Step 1: Write the proportion equation
74,920.23 : 112,396.77 = 28,173.09 : x - Step 2: Convert to fraction form
74,920.23/112,396.77 = 28,173.09/x - Step 3: Cross multiply
74,920.23x = 112,396.77 × 28,173.09 - Step 4: Simplify right side
74,920.23x = 3,166,564,316.92 - Step 5: Solve for x
x = 3,166,564,316.92/74,920.23 - Step 6: Final answer
x = 42,265.81
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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.