Finding the Fourth Proportional to 61.12, 91.70 and 37.09
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Solution
The fourth proportional to 61.12, 91.70 and 37.09 is: 55.65
Step by Step Solution
- Step 1: Write the proportion equation
61.12 : 91.70 = 37.09 : x - Step 2: Convert to fraction form
61.12/91.70 = 37.09/x - Step 3: Cross multiply
61.12x = 91.70 × 37.09 - Step 4: Simplify right side
61.12x = 3,401.02 - Step 5: Solve for x
x = 3,401.02/61.12 - Step 6: Final answer
x = 55.65
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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.