Finding the Fourth Proportional to 81,496.99, 122,221.76 and 31,565.95
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Solution
The fourth proportional to 81,496.99, 122,221.76 and 31,565.95 is: 47,339.73
Step by Step Solution
- Step 1: Write the proportion equation
81,496.99 : 122,221.76 = 31,565.95 : x - Step 2: Convert to fraction form
81,496.99/122,221.76 = 31,565.95/x - Step 3: Cross multiply
81,496.99x = 122,221.76 × 31,565.95 - Step 4: Simplify right side
81,496.99x = 3,858,045,196.13 - Step 5: Solve for x
x = 3,858,045,196.13/81,496.99 - Step 6: Final answer
x = 47,339.73
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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.