Finding the Fourth Proportional to 74,915.06, 103,378.19 and 40,916.66
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Solution
The fourth proportional to 74,915.06, 103,378.19 and 40,916.66 is: 56,462.48
Step by Step Solution
- Step 1: Write the proportion equation
74,915.06 : 103,378.19 = 40,916.66 : x - Step 2: Convert to fraction form
74,915.06/103,378.19 = 40,916.66/x - Step 3: Cross multiply
74,915.06x = 103,378.19 × 40,916.66 - Step 4: Simplify right side
74,915.06x = 4,229,889,530.17 - Step 5: Solve for x
x = 4,229,889,530.17/74,915.06 - Step 6: Final answer
x = 56,462.48
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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.