Finding the Fourth Proportional to 81,355.41, 122,070.24 and 48,140.55
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Solution
The fourth proportional to 81,355.41, 122,070.24 and 48,140.55 is: 72,232.79
Step by Step Solution
- Step 1: Write the proportion equation
81,355.41 : 122,070.24 = 48,140.55 : x - Step 2: Convert to fraction form
81,355.41/122,070.24 = 48,140.55/x - Step 3: Cross multiply
81,355.41x = 122,070.24 × 48,140.55 - Step 4: Simplify right side
81,355.41x = 5,876,528,492.23 - Step 5: Solve for x
x = 5,876,528,492.23/81,355.41 - Step 6: Final answer
x = 72,232.79
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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.