Finding the Fourth Proportional to 85,547.44, 128,311.14 and 32,920.12
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Solution
The fourth proportional to 85,547.44, 128,311.14 and 32,920.12 is: 49,376.32
Step by Step Solution
- Step 1: Write the proportion equation
85,547.44 : 128,311.14 = 32,920.12 : x - Step 2: Convert to fraction form
85,547.44/128,311.14 = 32,920.12/x - Step 3: Cross multiply
85,547.44x = 128,311.14 × 32,920.12 - Step 4: Simplify right side
85,547.44x = 4,224,018,126.14 - Step 5: Solve for x
x = 4,224,018,126.14/85,547.44 - Step 6: Final answer
x = 49,376.32
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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.