Finding the Fourth Proportional to 79,412.23, 109,515.74 and 53,956.70
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Solution
The fourth proportional to 79,412.23, 109,515.74 and 53,956.70 is: 74,410.55
Step by Step Solution
- Step 1: Write the proportion equation
79,412.23 : 109,515.74 = 53,956.70 : x - Step 2: Convert to fraction form
79,412.23/109,515.74 = 53,956.70/x - Step 3: Cross multiply
79,412.23x = 109,515.74 × 53,956.70 - Step 4: Simplify right side
79,412.23x = 5,909,107,658.67 - Step 5: Solve for x
x = 5,909,107,658.67/79,412.23 - Step 6: Final answer
x = 74,410.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.