Finding the Fourth Proportional to 85,765.24, 128,426.26 and 59,193.20
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Solution
The fourth proportional to 85,765.24, 128,426.26 and 59,193.20 is: 88,636.86
Step by Step Solution
- Step 1: Write the proportion equation
85,765.24 : 128,426.26 = 59,193.20 : x - Step 2: Convert to fraction form
85,765.24/128,426.26 = 59,193.20/x - Step 3: Cross multiply
85,765.24x = 128,426.26 × 59,193.20 - Step 4: Simplify right side
85,765.24x = 7,601,961,293.43 - Step 5: Solve for x
x = 7,601,961,293.43/85,765.24 - Step 6: Final answer
x = 88,636.86
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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.