Finding the Fourth Proportional to 74,471.17, 102,770.91 and 40,479.75
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Solution
The fourth proportional to 74,471.17, 102,770.91 and 40,479.75 is: 55,862.43
Step by Step Solution
- Step 1: Write the proportion equation
74,471.17 : 102,770.91 = 40,479.75 : x - Step 2: Convert to fraction form
74,471.17/102,770.91 = 40,479.75/x - Step 3: Cross multiply
74,471.17x = 102,770.91 × 40,479.75 - Step 4: Simplify right side
74,471.17x = 4,160,140,429.57 - Step 5: Solve for x
x = 4,160,140,429.57/74,471.17 - Step 6: Final answer
x = 55,862.43
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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.