Finding the Fourth Proportional to 84,946.40, 127,516.80 and 49,905.80
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Solution
The fourth proportional to 84,946.40, 127,516.80 and 49,905.80 is: 74,915.80
Step by Step Solution
- Step 1: Write the proportion equation
84,946.40 : 127,516.80 = 49,905.80 : x - Step 2: Convert to fraction form
84,946.40/127,516.80 = 49,905.80/x - Step 3: Cross multiply
84,946.40x = 127,516.80 × 49,905.80 - Step 4: Simplify right side
84,946.40x = 6,363,827,917.44 - Step 5: Solve for x
x = 6,363,827,917.44/84,946.40 - Step 6: Final answer
x = 74,915.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.