Finding the Fourth Proportional to 74,376.14, 102,638.99 and 40,842.14
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Solution
The fourth proportional to 74,376.14, 102,638.99 and 40,842.14 is: 56,362.10
Step by Step Solution
- Step 1: Write the proportion equation
74,376.14 : 102,638.99 = 40,842.14 : x - Step 2: Convert to fraction form
74,376.14/102,638.99 = 40,842.14/x - Step 3: Cross multiply
74,376.14x = 102,638.99 × 40,842.14 - Step 4: Simplify right side
74,376.14x = 4,191,995,281.63 - Step 5: Solve for x
x = 4,191,995,281.63/74,376.14 - Step 6: Final answer
x = 56,362.10
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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.