Finding the Fourth Proportional to 74,876.87, 112,315.10 and 30,493.19
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Solution
The fourth proportional to 74,876.87, 112,315.10 and 30,493.19 is: 45,739.70
Step by Step Solution
- Step 1: Write the proportion equation
74,876.87 : 112,315.10 = 30,493.19 : x - Step 2: Convert to fraction form
74,876.87/112,315.10 = 30,493.19/x - Step 3: Cross multiply
74,876.87x = 112,315.10 × 30,493.19 - Step 4: Simplify right side
74,876.87x = 3,424,844,970.13 - Step 5: Solve for x
x = 3,424,844,970.13/74,876.87 - Step 6: Final answer
x = 45,739.70
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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.