Finding the Fourth Proportional to 81,102.62, 111,921.85 and 45,293.99
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Solution
The fourth proportional to 81,102.62, 111,921.85 and 45,293.99 is: 62,505.83
Step by Step Solution
- Step 1: Write the proportion equation
81,102.62 : 111,921.85 = 45,293.99 : x - Step 2: Convert to fraction form
81,102.62/111,921.85 = 45,293.99/x - Step 3: Cross multiply
81,102.62x = 111,921.85 × 45,293.99 - Step 4: Simplify right side
81,102.62x = 5,069,386,651.69 - Step 5: Solve for x
x = 5,069,386,651.69/81,102.62 - Step 6: Final answer
x = 62,505.83
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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.