Finding the Fourth Proportional to 81,176.14, 121,775.64 and 25,020.79
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Solution
The fourth proportional to 81,176.14, 121,775.64 and 25,020.79 is: 37,534.70
Step by Step Solution
- Step 1: Write the proportion equation
81,176.14 : 121,775.64 = 25,020.79 : x - Step 2: Convert to fraction form
81,176.14/121,775.64 = 25,020.79/x - Step 3: Cross multiply
81,176.14x = 121,775.64 × 25,020.79 - Step 4: Simplify right side
81,176.14x = 3,046,921,981.57 - Step 5: Solve for x
x = 3,046,921,981.57/81,176.14 - Step 6: Final answer
x = 37,534.70
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1.5x scale
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.