Finding the Fourth Proportional to 79,412.71, 109,581.47 and 47,580.79
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Solution
The fourth proportional to 79,412.71, 109,581.47 and 47,580.79 is: 65,656.66
Step by Step Solution
- Step 1: Write the proportion equation
79,412.71 : 109,581.47 = 47,580.79 : x - Step 2: Convert to fraction form
79,412.71/109,581.47 = 47,580.79/x - Step 3: Cross multiply
79,412.71x = 109,581.47 × 47,580.79 - Step 4: Simplify right side
79,412.71x = 5,213,972,911.96 - Step 5: Solve for x
x = 5,213,972,911.96/79,412.71 - Step 6: Final answer
x = 65,656.66
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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.