Finding the Fourth Proportional to 71,286.18, 98,376.48 and 39,457.26
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Solution
The fourth proportional to 71,286.18, 98,376.48 and 39,457.26 is: 54,451.88
Step by Step Solution
- Step 1: Write the proportion equation
71,286.18 : 98,376.48 = 39,457.26 : x - Step 2: Convert to fraction form
71,286.18/98,376.48 = 39,457.26/x - Step 3: Cross multiply
71,286.18x = 98,376.48 × 39,457.26 - Step 4: Simplify right side
71,286.18x = 3,881,666,349.24 - Step 5: Solve for x
x = 3,881,666,349.24/71,286.18 - Step 6: Final answer
x = 54,451.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.