Finding the Fourth Proportional to 86,819.21, 130,142.60 and 49,301.63
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Solution
The fourth proportional to 86,819.21, 130,142.60 and 49,301.63 is: 73,903.48
Step by Step Solution
- Step 1: Write the proportion equation
86,819.21 : 130,142.60 = 49,301.63 : x - Step 2: Convert to fraction form
86,819.21/130,142.60 = 49,301.63/x - Step 3: Cross multiply
86,819.21x = 130,142.60 × 49,301.63 - Step 4: Simplify right side
86,819.21x = 6,416,242,088.13 - Step 5: Solve for x
x = 6,416,242,088.13/86,819.21 - Step 6: Final answer
x = 73,903.48
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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.