Finding the Fourth Proportional to 86,428.96, 119,251.08 and 48,703.20
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Solution
The fourth proportional to 86,428.96, 119,251.08 and 48,703.20 is: 67,198.65
Step by Step Solution
- Step 1: Write the proportion equation
86,428.96 : 119,251.08 = 48,703.20 : x - Step 2: Convert to fraction form
86,428.96/119,251.08 = 48,703.20/x - Step 3: Cross multiply
86,428.96x = 119,251.08 × 48,703.20 - Step 4: Simplify right side
86,428.96x = 5,807,909,199.46 - Step 5: Solve for x
x = 5,807,909,199.46/86,428.96 - Step 6: Final answer
x = 67,198.65
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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.