Finding the Fourth Proportional to 79,682.06, 109,936.40 and 45,221.08
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Solution
The fourth proportional to 79,682.06, 109,936.40 and 45,221.08 is: 62,390.99
Step by Step Solution
- Step 1: Write the proportion equation
79,682.06 : 109,936.40 = 45,221.08 : x - Step 2: Convert to fraction form
79,682.06/109,936.40 = 45,221.08/x - Step 3: Cross multiply
79,682.06x = 109,936.40 × 45,221.08 - Step 4: Simplify right side
79,682.06x = 4,971,442,739.31 - Step 5: Solve for x
x = 4,971,442,739.31/79,682.06 - Step 6: Final answer
x = 62,390.99
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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.