Finding the Fourth Proportional to 68,521.02, 102,781.52 and 18,601.12
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Solution
The fourth proportional to 68,521.02, 102,781.52 and 18,601.12 is: 27,901.68
Step by Step Solution
- Step 1: Write the proportion equation
68,521.02 : 102,781.52 = 18,601.12 : x - Step 2: Convert to fraction form
68,521.02/102,781.52 = 18,601.12/x - Step 3: Cross multiply
68,521.02x = 102,781.52 × 18,601.12 - Step 4: Simplify right side
68,521.02x = 1,911,851,387.30 - Step 5: Solve for x
x = 1,911,851,387.30/68,521.02 - Step 6: Final answer
x = 27,901.68
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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.