Finding the Fourth Proportional to 87,129.29, 130,710.95 and 27,960.41
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Solution
The fourth proportional to 87,129.29, 130,710.95 and 27,960.41 is: 41,946.07
Step by Step Solution
- Step 1: Write the proportion equation
87,129.29 : 130,710.95 = 27,960.41 : x - Step 2: Convert to fraction form
87,129.29/130,710.95 = 27,960.41/x - Step 3: Cross multiply
87,129.29x = 130,710.95 × 27,960.41 - Step 4: Simplify right side
87,129.29x = 3,654,730,960.13 - Step 5: Solve for x
x = 3,654,730,960.13/87,129.29 - Step 6: Final answer
x = 41,946.07
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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.