Finding the Fourth Proportional to 86,510.84, 129,703.95 and 53,161.99
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Solution
The fourth proportional to 86,510.84, 129,703.95 and 53,161.99 is: 79,704.70
Step by Step Solution
- Step 1: Write the proportion equation
86,510.84 : 129,703.95 = 53,161.99 : x - Step 2: Convert to fraction form
86,510.84/129,703.95 = 53,161.99/x - Step 3: Cross multiply
86,510.84x = 129,703.95 × 53,161.99 - Step 4: Simplify right side
86,510.84x = 6,895,319,768.60 - Step 5: Solve for x
x = 6,895,319,768.60/86,510.84 - Step 6: Final answer
x = 79,704.70
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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.