Finding the Fourth Proportional to 88,715.28, 122,421.87 and 50,989.53
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Solution
The fourth proportional to 88,715.28, 122,421.87 and 50,989.53 is: 70,362.55
Step by Step Solution
- Step 1: Write the proportion equation
88,715.28 : 122,421.87 = 50,989.53 : x - Step 2: Convert to fraction form
88,715.28/122,421.87 = 50,989.53/x - Step 3: Cross multiply
88,715.28x = 122,421.87 × 50,989.53 - Step 4: Simplify right side
88,715.28x = 6,242,233,613.02 - Step 5: Solve for x
x = 6,242,233,613.02/88,715.28 - Step 6: Final answer
x = 70,362.55
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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.