Finding the Fourth Proportional to 97,871.36, 135,065.68 and 55,428.96
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Solution
The fourth proportional to 97,871.36, 135,065.68 and 55,428.96 is: 76,493.78
Step by Step Solution
- Step 1: Write the proportion equation
97,871.36 : 135,065.68 = 55,428.96 : x - Step 2: Convert to fraction form
97,871.36/135,065.68 = 55,428.96/x - Step 3: Cross multiply
97,871.36x = 135,065.68 × 55,428.96 - Step 4: Simplify right side
97,871.36x = 7,486,550,174.09 - Step 5: Solve for x
x = 7,486,550,174.09/97,871.36 - Step 6: Final answer
x = 76,493.78
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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.