Finding the Fourth Proportional to 86,659.68, 119,641.92 and 54,855.84
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Solution
The fourth proportional to 86,659.68, 119,641.92 and 54,855.84 is: 75,733.70
Step by Step Solution
- Step 1: Write the proportion equation
86,659.68 : 119,641.92 = 54,855.84 : x - Step 2: Convert to fraction form
86,659.68/119,641.92 = 54,855.84/x - Step 3: Cross multiply
86,659.68x = 119,641.92 × 54,855.84 - Step 4: Simplify right side
86,659.68x = 6,563,058,020.81 - Step 5: Solve for x
x = 6,563,058,020.81/86,659.68 - Step 6: Final answer
x = 75,733.70
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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.