Finding the Fourth Proportional to 51,129.19, 76,622.91 and 38,638.99
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Solution
The fourth proportional to 51,129.19, 76,622.91 and 38,638.99 is: 57,904.92
Step by Step Solution
- Step 1: Write the proportion equation
51,129.19 : 76,622.91 = 38,638.99 : x - Step 2: Convert to fraction form
51,129.19/76,622.91 = 38,638.99/x - Step 3: Cross multiply
51,129.19x = 76,622.91 × 38,638.99 - Step 4: Simplify right side
51,129.19x = 2,960,631,853.26 - Step 5: Solve for x
x = 2,960,631,853.26/51,129.19 - Step 6: Final answer
x = 57,904.92
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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.