Finding the Fourth Proportional to 81,651,332.37, 122,434,471.13 and 38,508,951.99
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Solution
The fourth proportional to 81,651,332.37, 122,434,471.13 and 38,508,951.99 is: 57,743,370.91
Step by Step Solution
- Step 1: Write the proportion equation
81,651,332.37 : 122,434,471.13 = 38,508,951.99 : x - Step 2: Convert to fraction form
81,651,332.37/122,434,471.13 = 38,508,951.99/x - Step 3: Cross multiply
81,651,332.37x = 122,434,471.13 × 38,508,951.99 - Step 4: Simplify right side
81,651,332.37x = 4,714,823,170,473,667 - Step 5: Solve for x
x = 4,714,823,170,473,667/81,651,332.37 - Step 6: Final answer
x = 57,743,370.91
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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.