Finding the Fourth Proportional to 92,688.05, 127,785.80 and 73,631.08
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Solution
The fourth proportional to 92,688.05, 127,785.80 and 73,631.08 is: 101,512.62
Step by Step Solution
- Step 1: Write the proportion equation
92,688.05 : 127,785.80 = 73,631.08 : x - Step 2: Convert to fraction form
92,688.05/127,785.80 = 73,631.08/x - Step 3: Cross multiply
92,688.05x = 127,785.80 × 73,631.08 - Step 4: Simplify right side
92,688.05x = 9,409,006,087.68 - Step 5: Solve for x
x = 9,409,006,087.68/92,688.05 - Step 6: Final answer
x = 101,512.62
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1.5x scale
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.