Finding the Fourth Proportional to 68,521.20, 102,781.80 and 65,896.80
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Solution
The fourth proportional to 68,521.20, 102,781.80 and 65,896.80 is: 98,845.20
Step by Step Solution
- Step 1: Write the proportion equation
68,521.20 : 102,781.80 = 65,896.80 : x - Step 2: Convert to fraction form
68,521.20/102,781.80 = 65,896.80/x - Step 3: Cross multiply
68,521.20x = 102,781.80 × 65,896.80 - Step 4: Simplify right side
68,521.20x = 6,772,991,718.24 - Step 5: Solve for x
x = 6,772,991,718.24/68,521.20 - Step 6: Final answer
x = 98,845.20
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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.