Finding the Fourth Proportional to 85,692.36, 128,525.88 and 50,170.08
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Solution
The fourth proportional to 85,692.36, 128,525.88 and 50,170.08 is: 75,247.71
Step by Step Solution
- Step 1: Write the proportion equation
85,692.36 : 128,525.88 = 50,170.08 : x - Step 2: Convert to fraction form
85,692.36/128,525.88 = 50,170.08/x - Step 3: Cross multiply
85,692.36x = 128,525.88 × 50,170.08 - Step 4: Simplify right side
85,692.36x = 6,448,153,681.67 - Step 5: Solve for x
x = 6,448,153,681.67/85,692.36 - Step 6: Final answer
x = 75,247.71
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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.