Finding the Fourth Proportional to 85,593.08, 128,420.02 and 38,203.88
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Solution
The fourth proportional to 85,593.08, 128,420.02 and 38,203.88 is: 57,319.39
Step by Step Solution
- Step 1: Write the proportion equation
85,593.08 : 128,420.02 = 38,203.88 : x - Step 2: Convert to fraction form
85,593.08/128,420.02 = 38,203.88/x - Step 3: Cross multiply
85,593.08x = 128,420.02 × 38,203.88 - Step 4: Simplify right side
85,593.08x = 4,906,143,033.68 - Step 5: Solve for x
x = 4,906,143,033.68/85,593.08 - Step 6: Final answer
x = 57,319.39
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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.