Finding the Fourth Proportional to 94,031.35, 129,652.16 and 76,972.75
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Solution
The fourth proportional to 94,031.35, 129,652.16 and 76,972.75 is: 106,131.44
Step by Step Solution
- Step 1: Write the proportion equation
94,031.35 : 129,652.16 = 76,972.75 : x - Step 2: Convert to fraction form
94,031.35/129,652.16 = 76,972.75/x - Step 3: Cross multiply
94,031.35x = 129,652.16 × 76,972.75 - Step 4: Simplify right side
94,031.35x = 9,979,682,589.65 - Step 5: Solve for x
x = 9,979,682,589.65/94,031.35 - Step 6: Final answer
x = 106,131.44
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1.5x scale
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.