Finding the Fourth Proportional to 86,751.20, 130,126.80 and 24,421.70
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Solution
The fourth proportional to 86,751.20, 130,126.80 and 24,421.70 is: 36,632.55
Step by Step Solution
- Step 1: Write the proportion equation
86,751.20 : 130,126.80 = 24,421.70 : x - Step 2: Convert to fraction form
86,751.20/130,126.80 = 24,421.70/x - Step 3: Cross multiply
86,751.20x = 130,126.80 × 24,421.70 - Step 4: Simplify right side
86,751.20x = 3,177,917,671.56 - Step 5: Solve for x
x = 3,177,917,671.56/86,751.20 - Step 6: Final answer
x = 36,632.55
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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.