Finding the Fourth Proportional to 86,503.14, 129,834.90 and 53,288.08
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Solution
The fourth proportional to 86,503.14, 129,834.90 and 53,288.08 is: 79,981.52
Step by Step Solution
- Step 1: Write the proportion equation
86,503.14 : 129,834.90 = 53,288.08 : x - Step 2: Convert to fraction form
86,503.14/129,834.90 = 53,288.08/x - Step 3: Cross multiply
86,503.14x = 129,834.90 × 53,288.08 - Step 4: Simplify right side
86,503.14x = 6,918,652,213.40 - Step 5: Solve for x
x = 6,918,652,213.40/86,503.14 - Step 6: Final answer
x = 79,981.52
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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.