Finding the Fourth Proportional to 86,421.68, 119,261.40 and 48,708.08
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Solution
The fourth proportional to 86,421.68, 119,261.40 and 48,708.08 is: 67,216.86
Step by Step Solution
- Step 1: Write the proportion equation
86,421.68 : 119,261.40 = 48,708.08 : x - Step 2: Convert to fraction form
86,421.68/119,261.40 = 48,708.08/x - Step 3: Cross multiply
86,421.68x = 119,261.40 × 48,708.08 - Step 4: Simplify right side
86,421.68x = 5,808,993,812.11 - Step 5: Solve for x
x = 5,808,993,812.11/86,421.68 - Step 6: Final answer
x = 67,216.86
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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.