Finding the Fourth Proportional to 74,116.54, 102,280.10 and 40,124.13
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Solution
The fourth proportional to 74,116.54, 102,280.10 and 40,124.13 is: 55,370.90
Step by Step Solution
- Step 1: Write the proportion equation
74,116.54 : 102,280.10 = 40,124.13 : x - Step 2: Convert to fraction form
74,116.54/102,280.10 = 40,124.13/x - Step 3: Cross multiply
74,116.54x = 102,280.10 × 40,124.13 - Step 4: Simplify right side
74,116.54x = 4,103,899,828.19 - Step 5: Solve for x
x = 4,103,899,828.19/74,116.54 - Step 6: Final answer
x = 55,370.90
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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.