Finding the Fourth Proportional to 87,120,554.20, 130,680,831.30 and 73,515,664.60
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Solution
The fourth proportional to 87,120,554.20, 130,680,831.30 and 73,515,664.60 is: 110,273,496.90
Step by Step Solution
- Step 1: Write the proportion equation
87,120,554.20 : 130,680,831.30 = 73,515,664.60 : x - Step 2: Convert to fraction form
87,120,554.20/130,680,831.30 = 73,515,664.60/x - Step 3: Cross multiply
87,120,554.20x = 130,680,831.30 × 73,515,664.60 - Step 4: Simplify right side
87,120,554.20x = 9,607,088,163,499,980 - Step 5: Solve for x
x = 9,607,088,163,499,980/87,120,554.20 - Step 6: Final answer
x = 110,273,496.90
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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.