Finding the Fourth Proportional to 74,331.91, 102,578.10 and 40,340.40
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Solution
The fourth proportional to 74,331.91, 102,578.10 and 40,340.40 is: 55,669.79
Step by Step Solution
- Step 1: Write the proportion equation
74,331.91 : 102,578.10 = 40,340.40 : x - Step 2: Convert to fraction form
74,331.91/102,578.10 = 40,340.40/x - Step 3: Cross multiply
74,331.91x = 102,578.10 × 40,340.40 - Step 4: Simplify right side
74,331.91x = 4,138,041,585.24 - Step 5: Solve for x
x = 4,138,041,585.24/74,331.91 - Step 6: Final answer
x = 55,669.79
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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.