Finding the Fourth Proportional to 79,215.72, 109,228.14 and 50,497.08
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Solution
The fourth proportional to 79,215.72, 109,228.14 and 50,497.08 is: 69,628.88
Step by Step Solution
- Step 1: Write the proportion equation
79,215.72 : 109,228.14 = 50,497.08 : x - Step 2: Convert to fraction form
79,215.72/109,228.14 = 50,497.08/x - Step 3: Cross multiply
79,215.72x = 109,228.14 × 50,497.08 - Step 4: Simplify right side
79,215.72x = 5,515,702,123.83 - Step 5: Solve for x
x = 5,515,702,123.83/79,215.72 - Step 6: Final answer
x = 69,628.88
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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.