Finding the Fourth Proportional to 81,908,749.21, 122,863,581.08 and 27,321,184.12
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Solution
The fourth proportional to 81,908,749.21, 122,863,581.08 and 27,321,184.12 is: 40,981,928.70
Step by Step Solution
- Step 1: Write the proportion equation
81,908,749.21 : 122,863,581.08 = 27,321,184.12 : x - Step 2: Convert to fraction form
81,908,749.21/122,863,581.08 = 27,321,184.12/x - Step 3: Cross multiply
81,908,749.21x = 122,863,581.08 × 27,321,184.12 - Step 4: Simplify right side
81,908,749.21x = 3,356,778,520,329,228.50 - Step 5: Solve for x
x = 3,356,778,520,329,228.50/81,908,749.21 - Step 6: Final answer
x = 40,981,928.70
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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.