Finding the Fourth Proportional to 87,630.13, 120,938.11 and 51,831.67
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Solution
The fourth proportional to 87,630.13, 120,938.11 and 51,831.67 is: 71,532.75
Step by Step Solution
- Step 1: Write the proportion equation
87,630.13 : 120,938.11 = 51,831.67 : x - Step 2: Convert to fraction form
87,630.13/120,938.11 = 51,831.67/x - Step 3: Cross multiply
87,630.13x = 120,938.11 × 51,831.67 - Step 4: Simplify right side
87,630.13x = 6,268,423,948.79 - Step 5: Solve for x
x = 6,268,423,948.79/87,630.13 - Step 6: Final answer
x = 71,532.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.