Finding the Fourth Proportional to 81,420.99, 121,951.04 and 62,562.21
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Solution
The fourth proportional to 81,420.99, 121,951.04 and 62,562.21 is: 93,704.66
Step by Step Solution
- Step 1: Write the proportion equation
81,420.99 : 121,951.04 = 62,562.21 : x - Step 2: Convert to fraction form
81,420.99/121,951.04 = 62,562.21/x - Step 3: Cross multiply
81,420.99x = 121,951.04 × 62,562.21 - Step 4: Simplify right side
81,420.99x = 7,629,526,666.00 - Step 5: Solve for x
x = 7,629,526,666.00/81,420.99 - Step 6: Final answer
x = 93,704.66
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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.