Finding the Fourth Proportional to 70,882.62, 106,292.07 and 20,945.31
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Solution
The fourth proportional to 70,882.62, 106,292.07 and 20,945.31 is: 31,408.55
Step by Step Solution
- Step 1: Write the proportion equation
70,882.62 : 106,292.07 = 20,945.31 : x - Step 2: Convert to fraction form
70,882.62/106,292.07 = 20,945.31/x - Step 3: Cross multiply
70,882.62x = 106,292.07 × 20,945.31 - Step 4: Simplify right side
70,882.62x = 2,226,320,356.69 - Step 5: Solve for x
x = 2,226,320,356.69/70,882.62 - Step 6: Final answer
x = 31,408.55
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1.5x scale
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.