Finding the Fourth Proportional to 73,921.71, 102,011.99 and 39,930.19
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Solution
The fourth proportional to 73,921.71, 102,011.99 and 39,930.19 is: 55,103.69
Step by Step Solution
- Step 1: Write the proportion equation
73,921.71 : 102,011.99 = 39,930.19 : x - Step 2: Convert to fraction form
73,921.71/102,011.99 = 39,930.19/x - Step 3: Cross multiply
73,921.71x = 102,011.99 × 39,930.19 - Step 4: Simplify right side
73,921.71x = 4,073,358,798.63 - Step 5: Solve for x
x = 4,073,358,798.63/73,921.71 - Step 6: Final answer
x = 55,103.69
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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.