Finding the Fourth Proportional to 81,695.35, 122,543.12 and 25,535.75
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Solution
The fourth proportional to 81,695.35, 122,543.12 and 25,535.75 is: 38,303.65
Step by Step Solution
- Step 1: Write the proportion equation
81,695.35 : 122,543.12 = 25,535.75 : x - Step 2: Convert to fraction form
81,695.35/122,543.12 = 25,535.75/x - Step 3: Cross multiply
81,695.35x = 122,543.12 × 25,535.75 - Step 4: Simplify right side
81,695.35x = 3,129,230,476.54 - Step 5: Solve for x
x = 3,129,230,476.54/81,695.35 - Step 6: Final answer
x = 38,303.65
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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.