Finding the Fourth Proportional to 71,927.62, 107,878.44 and 19,324.80
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Solution
The fourth proportional to 71,927.62, 107,878.44 and 19,324.80 is: 28,983.71
Step by Step Solution
- Step 1: Write the proportion equation
71,927.62 : 107,878.44 = 19,324.80 : x - Step 2: Convert to fraction form
71,927.62/107,878.44 = 19,324.80/x - Step 3: Cross multiply
71,927.62x = 107,878.44 × 19,324.80 - Step 4: Simplify right side
71,927.62x = 2,084,729,277.31 - Step 5: Solve for x
x = 2,084,729,277.31/71,927.62 - Step 6: Final answer
x = 28,983.71
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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.