Finding the Fourth Proportional to 74,397.88, 102,668.34 and 40,406.68
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Solution
The fourth proportional to 74,397.88, 102,668.34 and 40,406.68 is: 55,760.82
Step by Step Solution
- Step 1: Write the proportion equation
74,397.88 : 102,668.34 = 40,406.68 : x - Step 2: Convert to fraction form
74,397.88/102,668.34 = 40,406.68/x - Step 3: Cross multiply
74,397.88x = 102,668.34 × 40,406.68 - Step 4: Simplify right side
74,397.88x = 4,148,486,760.51 - Step 5: Solve for x
x = 4,148,486,760.51/74,397.88 - Step 6: Final answer
x = 55,760.82
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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.