Finding the Fourth Proportional to 86,649.05, 129,972.54 and 27,485.23
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Solution
The fourth proportional to 86,649.05, 129,972.54 and 27,485.23 is: 41,227.52
Step by Step Solution
- Step 1: Write the proportion equation
86,649.05 : 129,972.54 = 27,485.23 : x - Step 2: Convert to fraction form
86,649.05/129,972.54 = 27,485.23/x - Step 3: Cross multiply
86,649.05x = 129,972.54 × 27,485.23 - Step 4: Simplify right side
86,649.05x = 3,572,325,155.58 - Step 5: Solve for x
x = 3,572,325,155.58/86,649.05 - Step 6: Final answer
x = 41,227.52
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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.