Finding the Fourth Proportional to 74,072.30, 102,220.04 and 68,421.47
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Solution
The fourth proportional to 74,072.30, 102,220.04 and 68,421.47 is: 94,421.88
Step by Step Solution
- Step 1: Write the proportion equation
74,072.30 : 102,220.04 = 68,421.47 : x - Step 2: Convert to fraction form
74,072.30/102,220.04 = 68,421.47/x - Step 3: Cross multiply
74,072.30x = 102,220.04 × 68,421.47 - Step 4: Simplify right side
74,072.30x = 6,994,045,060.21 - Step 5: Solve for x
x = 6,994,045,060.21/74,072.30 - Step 6: Final answer
x = 94,421.88
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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.