Finding the Fourth Proportional to 49,207,831.20, 73,811,746.80 and 20,474,587.80
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Solution
The fourth proportional to 49,207,831.20, 73,811,746.80 and 20,474,587.80 is: 30,711,881.70
Step by Step Solution
- Step 1: Write the proportion equation
49,207,831.20 : 73,811,746.80 = 20,474,587.80 : x - Step 2: Convert to fraction form
49,207,831.20/73,811,746.80 = 20,474,587.80/x - Step 3: Cross multiply
49,207,831.20x = 73,811,746.80 × 20,474,587.80 - Step 4: Simplify right side
49,207,831.20x = 1,511,265,090,527,969 - Step 5: Solve for x
x = 1,511,265,090,527,969/49,207,831.20 - Step 6: Final answer
x = 30,711,881.70
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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.