Finding the Fourth Proportional to 86,258.79, 129,400.20 and 27,099.09
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Solution
The fourth proportional to 86,258.79, 129,400.20 and 27,099.09 is: 40,652.41
Step by Step Solution
- Step 1: Write the proportion equation
86,258.79 : 129,400.20 = 27,099.09 : x - Step 2: Convert to fraction form
86,258.79/129,400.20 = 27,099.09/x - Step 3: Cross multiply
86,258.79x = 129,400.20 × 27,099.09 - Step 4: Simplify right side
86,258.79x = 3,506,627,665.82 - Step 5: Solve for x
x = 3,506,627,665.82/86,258.79 - Step 6: Final answer
x = 40,652.41
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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.