Finding the Fourth Proportional to 86,587.05, 129,898.80 and 27,428.70
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Solution
The fourth proportional to 86,587.05, 129,898.80 and 27,428.70 is: 41,148.82
Step by Step Solution
- Step 1: Write the proportion equation
86,587.05 : 129,898.80 = 27,428.70 : x - Step 2: Convert to fraction form
86,587.05/129,898.80 = 27,428.70/x - Step 3: Cross multiply
86,587.05x = 129,898.80 × 27,428.70 - Step 4: Simplify right side
86,587.05x = 3,562,955,215.56 - Step 5: Solve for x
x = 3,562,955,215.56/86,587.05 - Step 6: Final answer
x = 41,148.82
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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.