Finding the Fourth Proportional to 68,467.70, 102,701.55 and 18,547.70
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Solution
The fourth proportional to 68,467.70, 102,701.55 and 18,547.70 is: 27,821.55
Step by Step Solution
- Step 1: Write the proportion equation
68,467.70 : 102,701.55 = 18,547.70 : x - Step 2: Convert to fraction form
68,467.70/102,701.55 = 18,547.70/x - Step 3: Cross multiply
68,467.70x = 102,701.55 × 18,547.70 - Step 4: Simplify right side
68,467.70x = 1,904,877,538.94 - Step 5: Solve for x
x = 1,904,877,538.94/68,467.70 - Step 6: Final answer
x = 27,821.55
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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.