Finding the Fourth Proportional to 99,743.20, 149,614.80 and 40,621.30
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Solution
The fourth proportional to 99,743.20, 149,614.80 and 40,621.30 is: 60,931.95
Step by Step Solution
- Step 1: Write the proportion equation
99,743.20 : 149,614.80 = 40,621.30 : x - Step 2: Convert to fraction form
99,743.20/149,614.80 = 40,621.30/x - Step 3: Cross multiply
99,743.20x = 149,614.80 × 40,621.30 - Step 4: Simplify right side
99,743.20x = 6,077,547,675.24 - Step 5: Solve for x
x = 6,077,547,675.24/99,743.20 - Step 6: Final answer
x = 60,931.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.