Finding the Fourth Proportional to 79,314.35, 109,416.06 and 47,477.09
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Solution
The fourth proportional to 79,314.35, 109,416.06 and 47,477.09 is: 65,495.79
Step by Step Solution
- Step 1: Write the proportion equation
79,314.35 : 109,416.06 = 47,477.09 : x - Step 2: Convert to fraction form
79,314.35/109,416.06 = 47,477.09/x - Step 3: Cross multiply
79,314.35x = 109,416.06 × 47,477.09 - Step 4: Simplify right side
79,314.35x = 5,194,755,580.99 - Step 5: Solve for x
x = 5,194,755,580.99/79,314.35 - Step 6: Final answer
x = 65,495.79
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1.5x scale
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.