Finding the Fourth Proportional to 74,436.95, 102,721.75 and 40,445.96
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Solution
The fourth proportional to 74,436.95, 102,721.75 and 40,445.96 is: 55,814.75
Step by Step Solution
- Step 1: Write the proportion equation
74,436.95 : 102,721.75 = 40,445.96 : x - Step 2: Convert to fraction form
74,436.95/102,721.75 = 40,445.96/x - Step 3: Cross multiply
74,436.95x = 102,721.75 × 40,445.96 - Step 4: Simplify right side
74,436.95x = 4,154,679,589.40 - Step 5: Solve for x
x = 4,154,679,589.40/74,436.95 - Step 6: Final answer
x = 55,814.75
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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.