Finding the Fourth Proportional to 81,790.08, 122,685.14 and 25,630.18
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Solution
The fourth proportional to 81,790.08, 122,685.14 and 25,630.18 is: 38,445.27
Step by Step Solution
- Step 1: Write the proportion equation
81,790.08 : 122,685.14 = 25,630.18 : x - Step 2: Convert to fraction form
81,790.08/122,685.14 = 25,630.18/x - Step 3: Cross multiply
81,790.08x = 122,685.14 × 25,630.18 - Step 4: Simplify right side
81,790.08x = 3,144,442,036.13 - Step 5: Solve for x
x = 3,144,442,036.13/81,790.08 - Step 6: Final answer
x = 38,445.27
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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.