Finding the Fourth Proportional to 85,578.71, 128,368.07 and 32,256.23
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Solution
The fourth proportional to 85,578.71, 128,368.07 and 32,256.23 is: 48,384.35
Step by Step Solution
- Step 1: Write the proportion equation
85,578.71 : 128,368.07 = 32,256.23 : x - Step 2: Convert to fraction form
85,578.71/128,368.07 = 32,256.23/x - Step 3: Cross multiply
85,578.71x = 128,368.07 × 32,256.23 - Step 4: Simplify right side
85,578.71x = 4,140,670,392.14 - Step 5: Solve for x
x = 4,140,670,392.14/85,578.71 - Step 6: Final answer
x = 48,384.35
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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.