Finding the Fourth Proportional to 86,390.60, 119,218.92 and 48,665.12
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Solution
The fourth proportional to 86,390.60, 119,218.92 and 48,665.12 is: 67,157.80
Step by Step Solution
- Step 1: Write the proportion equation
86,390.60 : 119,218.92 = 48,665.12 : x - Step 2: Convert to fraction form
86,390.60/119,218.92 = 48,665.12/x - Step 3: Cross multiply
86,390.60x = 119,218.92 × 48,665.12 - Step 4: Simplify right side
86,390.60x = 5,801,803,048.07 - Step 5: Solve for x
x = 5,801,803,048.07/86,390.60 - Step 6: Final answer
x = 67,157.80
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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.