Finding the Fourth Proportional to 81,699.16, 122,652.44 and 69,464.92
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Solution
The fourth proportional to 81,699.16, 122,652.44 and 69,464.92 is: 104,285.55
Step by Step Solution
- Step 1: Write the proportion equation
81,699.16 : 122,652.44 = 69,464.92 : x - Step 2: Convert to fraction form
81,699.16/122,652.44 = 69,464.92/x - Step 3: Cross multiply
81,699.16x = 122,652.44 × 69,464.92 - Step 4: Simplify right side
81,699.16x = 8,520,041,932.40 - Step 5: Solve for x
x = 8,520,041,932.40/81,699.16 - Step 6: Final answer
x = 104,285.55
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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.