Finding the Fourth Proportional to 87,862.40, 121,247.52 and 49,623.52
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Solution
The fourth proportional to 87,862.40, 121,247.52 and 49,623.52 is: 68,478.99
Step by Step Solution
- Step 1: Write the proportion equation
87,862.40 : 121,247.52 = 49,623.52 : x - Step 2: Convert to fraction form
87,862.40/121,247.52 = 49,623.52/x - Step 3: Cross multiply
87,862.40x = 121,247.52 × 49,623.52 - Step 4: Simplify right side
87,862.40x = 6,016,728,733.67 - Step 5: Solve for x
x = 6,016,728,733.67/87,862.40 - Step 6: Final answer
x = 68,478.99
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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.