Finding the Fourth Proportional to 83,861.74, 115,727.30 and 48,072.84
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Solution
The fourth proportional to 83,861.74, 115,727.30 and 48,072.84 is: 66,339.43
Step by Step Solution
- Step 1: Write the proportion equation
83,861.74 : 115,727.30 = 48,072.84 : x - Step 2: Convert to fraction form
83,861.74/115,727.30 = 48,072.84/x - Step 3: Cross multiply
83,861.74x = 115,727.30 × 48,072.84 - Step 4: Simplify right side
83,861.74x = 5,563,339,976.53 - Step 5: Solve for x
x = 5,563,339,976.53/83,861.74 - Step 6: Final answer
x = 66,339.43
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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.