Finding the Fourth Proportional to 74,001.68, 102,121.80 and 40,467.92
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Solution
The fourth proportional to 74,001.68, 102,121.80 and 40,467.92 is: 55,845.45
Step by Step Solution
- Step 1: Write the proportion equation
74,001.68 : 102,121.80 = 40,467.92 : x - Step 2: Convert to fraction form
74,001.68/102,121.80 = 40,467.92/x - Step 3: Cross multiply
74,001.68x = 102,121.80 × 40,467.92 - Step 4: Simplify right side
74,001.68x = 4,132,656,832.66 - Step 5: Solve for x
x = 4,132,656,832.66/74,001.68 - Step 6: Final answer
x = 55,845.45
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1.5x scale
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.