Finding the Fourth Proportional to 79,579.08, 109,815.05 and 43,762.21
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Solution
The fourth proportional to 79,579.08, 109,815.05 and 43,762.21 is: 60,389.60
Step by Step Solution
- Step 1: Write the proportion equation
79,579.08 : 109,815.05 = 43,762.21 : x - Step 2: Convert to fraction form
79,579.08/109,815.05 = 43,762.21/x - Step 3: Cross multiply
79,579.08x = 109,815.05 × 43,762.21 - Step 4: Simplify right side
79,579.08x = 4,805,749,114.13 - Step 5: Solve for x
x = 4,805,749,114.13/79,579.08 - Step 6: Final answer
x = 60,389.60
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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.