Finding the Fourth Proportional to 74,554.76, 102,886.80 and 40,563.92
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Solution
The fourth proportional to 74,554.76, 102,886.80 and 40,563.92 is: 55,978.88
Step by Step Solution
- Step 1: Write the proportion equation
74,554.76 : 102,886.80 = 40,563.92 : x - Step 2: Convert to fraction form
74,554.76/102,886.80 = 40,563.92/x - Step 3: Cross multiply
74,554.76x = 102,886.80 × 40,563.92 - Step 4: Simplify right side
74,554.76x = 4,173,491,924.26 - Step 5: Solve for x
x = 4,173,491,924.26/74,554.76 - Step 6: Final answer
x = 55,978.88
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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.