Finding the Fourth Proportional to 74,108.10, 102,269.07 and 40,116.42
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Solution
The fourth proportional to 74,108.10, 102,269.07 and 40,116.42 is: 55,360.60
Step by Step Solution
- Step 1: Write the proportion equation
74,108.10 : 102,269.07 = 40,116.42 : x - Step 2: Convert to fraction form
74,108.10/102,269.07 = 40,116.42/x - Step 3: Cross multiply
74,108.10x = 102,269.07 × 40,116.42 - Step 4: Simplify right side
74,108.10x = 4,102,668,965.13 - Step 5: Solve for x
x = 4,102,668,965.13/74,108.10 - Step 6: Final answer
x = 55,360.60
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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.