Finding the Fourth Proportional to 79,821.50, 110,175.44 and 51,138.99
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Solution
The fourth proportional to 79,821.50, 110,175.44 and 51,138.99 is: 70,585.75
Step by Step Solution
- Step 1: Write the proportion equation
79,821.50 : 110,175.44 = 51,138.99 : x - Step 2: Convert to fraction form
79,821.50/110,175.44 = 51,138.99/x - Step 3: Cross multiply
79,821.50x = 110,175.44 × 51,138.99 - Step 4: Simplify right side
79,821.50x = 5,634,260,468.71 - Step 5: Solve for x
x = 5,634,260,468.71/79,821.50 - Step 6: Final answer
x = 70,585.75
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1.5x scale
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.