Finding the Fourth Proportional to 81,941.90, 122,871.68 and 47,758.68
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Solution
The fourth proportional to 81,941.90, 122,871.68 and 47,758.68 is: 71,614.02
Step by Step Solution
- Step 1: Write the proportion equation
81,941.90 : 122,871.68 = 47,758.68 : x - Step 2: Convert to fraction form
81,941.90/122,871.68 = 47,758.68/x - Step 3: Cross multiply
81,941.90x = 122,871.68 × 47,758.68 - Step 4: Simplify right side
81,941.90x = 5,868,189,246.18 - Step 5: Solve for x
x = 5,868,189,246.18/81,941.90 - Step 6: Final answer
x = 71,614.02
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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.