Finding the Fourth Proportional to 71,724.80, 107,572.80 and 34,284.80
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Solution
The fourth proportional to 71,724.80, 107,572.80 and 34,284.80 is: 51,420.32
Step by Step Solution
- Step 1: Write the proportion equation
71,724.80 : 107,572.80 = 34,284.80 : x - Step 2: Convert to fraction form
71,724.80/107,572.80 = 34,284.80/x - Step 3: Cross multiply
71,724.80x = 107,572.80 × 34,284.80 - Step 4: Simplify right side
71,724.80x = 3,688,111,933.44 - Step 5: Solve for x
x = 3,688,111,933.44/71,724.80 - Step 6: Final answer
x = 51,420.32
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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.