Finding the Fourth Proportional to 74,583.72, 102,902.31 and 42,312.99
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Solution
The fourth proportional to 74,583.72, 102,902.31 and 42,312.99 is: 58,378.75
Step by Step Solution
- Step 1: Write the proportion equation
74,583.72 : 102,902.31 = 42,312.99 : x - Step 2: Convert to fraction form
74,583.72/102,902.31 = 42,312.99/x - Step 3: Cross multiply
74,583.72x = 102,902.31 × 42,312.99 - Step 4: Simplify right side
74,583.72x = 4,354,104,414.01 - Step 5: Solve for x
x = 4,354,104,414.01/74,583.72 - Step 6: Final answer
x = 58,378.75
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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.