Finding the Fourth Proportional to 79,432.28, 109,628.05 and 47,604.14
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Solution
The fourth proportional to 79,432.28, 109,628.05 and 47,604.14 is: 65,700.61
Step by Step Solution
- Step 1: Write the proportion equation
79,432.28 : 109,628.05 = 47,604.14 : x - Step 2: Convert to fraction form
79,432.28/109,628.05 = 47,604.14/x - Step 3: Cross multiply
79,432.28x = 109,628.05 × 47,604.14 - Step 4: Simplify right side
79,432.28x = 5,218,749,040.13 - Step 5: Solve for x
x = 5,218,749,040.13/79,432.28 - Step 6: Final answer
x = 65,700.61
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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.