Finding the Fourth Proportional to 79,437.08, 109,622.74 and 43,138.21
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Solution
The fourth proportional to 79,437.08, 109,622.74 and 43,138.21 is: 59,530.50
Step by Step Solution
- Step 1: Write the proportion equation
79,437.08 : 109,622.74 = 43,138.21 : x - Step 2: Convert to fraction form
79,437.08/109,622.74 = 43,138.21/x - Step 3: Cross multiply
79,437.08x = 109,622.74 × 43,138.21 - Step 4: Simplify right side
79,437.08x = 4,728,928,778.90 - Step 5: Solve for x
x = 4,728,928,778.90/79,437.08 - Step 6: Final answer
x = 59,530.50
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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.