Finding the Fourth Proportional to 71,439.59, 107,177.21 and 50,420.70
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Solution
The fourth proportional to 71,439.59, 107,177.21 and 50,420.70 is: 75,643.62
Step by Step Solution
- Step 1: Write the proportion equation
71,439.59 : 107,177.21 = 50,420.70 : x - Step 2: Convert to fraction form
71,439.59/107,177.21 = 50,420.70/x - Step 3: Cross multiply
71,439.59x = 107,177.21 × 50,420.70 - Step 4: Simplify right side
71,439.59x = 5,403,949,164.26 - Step 5: Solve for x
x = 5,403,949,164.26/71,439.59 - Step 6: Final answer
x = 75,643.62
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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.