Finding the Fourth Proportional to 75,291.70, 112,937.55 and 74,125.30
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Solution
The fourth proportional to 75,291.70, 112,937.55 and 74,125.30 is: 111,187.95
Step by Step Solution
- Step 1: Write the proportion equation
75,291.70 : 112,937.55 = 74,125.30 : x - Step 2: Convert to fraction form
75,291.70/112,937.55 = 74,125.30/x - Step 3: Cross multiply
75,291.70x = 112,937.55 × 74,125.30 - Step 4: Simplify right side
75,291.70x = 8,371,529,775.02 - Step 5: Solve for x
x = 8,371,529,775.02/75,291.70 - Step 6: Final answer
x = 111,187.95
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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.