Finding the Fourth Proportional to 69,805.36, 104,707.56 and 28,251.76
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Solution
The fourth proportional to 69,805.36, 104,707.56 and 28,251.76 is: 42,377.45
Step by Step Solution
- Step 1: Write the proportion equation
69,805.36 : 104,707.56 = 28,251.76 : x - Step 2: Convert to fraction form
69,805.36/104,707.56 = 28,251.76/x - Step 3: Cross multiply
69,805.36x = 104,707.56 × 28,251.76 - Step 4: Simplify right side
69,805.36x = 2,958,172,855.31 - Step 5: Solve for x
x = 2,958,172,855.31/69,805.36 - Step 6: Final answer
x = 42,377.45
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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.