Finding the Fourth Proportional to 87,431.68, 130,892.36 and 65,041.68
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Solution
The fourth proportional to 87,431.68, 130,892.36 and 65,041.68 is: 97,372.70
Step by Step Solution
- Step 1: Write the proportion equation
87,431.68 : 130,892.36 = 65,041.68 : x - Step 2: Convert to fraction form
87,431.68/130,892.36 = 65,041.68/x - Step 3: Cross multiply
87,431.68x = 130,892.36 × 65,041.68 - Step 4: Simplify right side
87,431.68x = 8,513,458,993.56 - Step 5: Solve for x
x = 8,513,458,993.56/87,431.68 - Step 6: Final answer
x = 97,372.70
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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.