Finding the Fourth Proportional to 74,116.19, 102,279.86 and 40,124.43
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Solution
The fourth proportional to 74,116.19, 102,279.86 and 40,124.43 is: 55,371.45
Step by Step Solution
- Step 1: Write the proportion equation
74,116.19 : 102,279.86 = 40,124.43 : x - Step 2: Convert to fraction form
74,116.19/102,279.86 = 40,124.43/x - Step 3: Cross multiply
74,116.19x = 102,279.86 × 40,124.43 - Step 4: Simplify right side
74,116.19x = 4,103,920,882.36 - Step 5: Solve for x
x = 4,103,920,882.36/74,116.19 - Step 6: Final answer
x = 55,371.45
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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.