Finding the Fourth Proportional to 74,431.02, 102,714.79 and 40,897.02
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Solution
The fourth proportional to 74,431.02, 102,714.79 and 40,897.02 is: 56,437.88
Step by Step Solution
- Step 1: Write the proportion equation
74,431.02 : 102,714.79 = 40,897.02 : x - Step 2: Convert to fraction form
74,431.02/102,714.79 = 40,897.02/x - Step 3: Cross multiply
74,431.02x = 102,714.79 × 40,897.02 - Step 4: Simplify right side
74,431.02x = 4,200,728,820.93 - Step 5: Solve for x
x = 4,200,728,820.93/74,431.02 - Step 6: Final answer
x = 56,437.88
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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.