Finding the Fourth Proportional to 75,129.08, 103,677.18 and 45,321.08
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Solution
The fourth proportional to 75,129.08, 103,677.18 and 45,321.08 is: 62,542.52
Step by Step Solution
- Step 1: Write the proportion equation
75,129.08 : 103,677.18 = 45,321.08 : x - Step 2: Convert to fraction form
75,129.08/103,677.18 = 45,321.08/x - Step 3: Cross multiply
75,129.08x = 103,677.18 × 45,321.08 - Step 4: Simplify right side
75,129.08x = 4,698,761,768.95 - Step 5: Solve for x
x = 4,698,761,768.95/75,129.08 - Step 6: Final answer
x = 62,542.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.