Finding the Fourth Proportional to 79,503.60, 119,254.56 and 20,338.80
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Solution
The fourth proportional to 79,503.60, 119,254.56 and 20,338.80 is: 30,507.99
Step by Step Solution
- Step 1: Write the proportion equation
79,503.60 : 119,254.56 = 20,338.80 : x - Step 2: Convert to fraction form
79,503.60/119,254.56 = 20,338.80/x - Step 3: Cross multiply
79,503.60x = 119,254.56 × 20,338.80 - Step 4: Simplify right side
79,503.60x = 2,425,494,644.93 - Step 5: Solve for x
x = 2,425,494,644.93/79,503.60 - Step 6: Final answer
x = 30,507.99
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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.