Finding the Fourth Proportional to 97,915.10, 135,121.70 and 54,894.38
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Solution
The fourth proportional to 97,915.10, 135,121.70 and 54,894.38 is: 75,753.61
Step by Step Solution
- Step 1: Write the proportion equation
97,915.10 : 135,121.70 = 54,894.38 : x - Step 2: Convert to fraction form
97,915.10/135,121.70 = 54,894.38/x - Step 3: Cross multiply
97,915.10x = 135,121.70 × 54,894.38 - Step 4: Simplify right side
97,915.10x = 7,417,421,946.05 - Step 5: Solve for x
x = 7,417,421,946.05/97,915.10 - Step 6: Final answer
x = 75,753.61
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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.