Finding the Fourth Proportional to 79.10, 109.19 and 49.99
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Solution
The fourth proportional to 79.10, 109.19 and 49.99 is: 69.01
Step by Step Solution
- Step 1: Write the proportion equation
79.10 : 109.19 = 49.99 : x - Step 2: Convert to fraction form
79.10/109.19 = 49.99/x - Step 3: Cross multiply
79.10x = 109.19 × 49.99 - Step 4: Simplify right side
79.10x = 5,458.49 - Step 5: Solve for x
x = 5,458.49/79.10 - Step 6: Final answer
x = 69.01
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.