Finding the Fourth Proportional to 71,719.44, 107,579.16 and 19,129.14
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Solution
The fourth proportional to 71,719.44, 107,579.16 and 19,129.14 is: 28,693.71
Step by Step Solution
- Step 1: Write the proportion equation
71,719.44 : 107,579.16 = 19,129.14 : x - Step 2: Convert to fraction form
71,719.44/107,579.16 = 19,129.14/x - Step 3: Cross multiply
71,719.44x = 107,579.16 × 19,129.14 - Step 4: Simplify right side
71,719.44x = 2,057,896,812.72 - Step 5: Solve for x
x = 2,057,896,812.72/71,719.44 - Step 6: Final answer
x = 28,693.71
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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.