Finding the Fourth Proportional to 74,239.24, 102,312.80 and 52,729.96
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Solution
The fourth proportional to 74,239.24, 102,312.80 and 52,729.96 is: 72,669.79
Step by Step Solution
- Step 1: Write the proportion equation
74,239.24 : 102,312.80 = 52,729.96 : x - Step 2: Convert to fraction form
74,239.24/102,312.80 = 52,729.96/x - Step 3: Cross multiply
74,239.24x = 102,312.80 × 52,729.96 - Step 4: Simplify right side
74,239.24x = 5,394,949,851.49 - Step 5: Solve for x
x = 5,394,949,851.49/74,239.24 - Step 6: Final answer
x = 72,669.79
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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.