Finding the Fourth Proportional to 70,749.38, 106,087.54 and 20,822.99
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Solution
The fourth proportional to 70,749.38, 106,087.54 and 20,822.99 is: 31,223.73
Step by Step Solution
- Step 1: Write the proportion equation
70,749.38 : 106,087.54 = 20,822.99 : x - Step 2: Convert to fraction form
70,749.38/106,087.54 = 20,822.99/x - Step 3: Cross multiply
70,749.38x = 106,087.54 × 20,822.99 - Step 4: Simplify right side
70,749.38x = 2,209,059,784.54 - Step 5: Solve for x
x = 2,209,059,784.54/70,749.38 - Step 6: Final answer
x = 31,223.73
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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.