Finding the Fourth Proportional to 67,639.80, 101,459.70 and 65,695.80
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Solution
The fourth proportional to 67,639.80, 101,459.70 and 65,695.80 is: 98,543.70
Step by Step Solution
- Step 1: Write the proportion equation
67,639.80 : 101,459.70 = 65,695.80 : x - Step 2: Convert to fraction form
67,639.80/101,459.70 = 65,695.80/x - Step 3: Cross multiply
67,639.80x = 101,459.70 × 65,695.80 - Step 4: Simplify right side
67,639.80x = 6,665,476,159.26 - Step 5: Solve for x
x = 6,665,476,159.26/67,639.80 - Step 6: Final answer
x = 98,543.70
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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.