Finding the Fourth Proportional to 81,583.11, 122,437.05 and 39,487.95
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Solution
The fourth proportional to 81,583.11, 122,437.05 and 39,487.95 is: 59,262.12
Step by Step Solution
- Step 1: Write the proportion equation
81,583.11 : 122,437.05 = 39,487.95 : x - Step 2: Convert to fraction form
81,583.11/122,437.05 = 39,487.95/x - Step 3: Cross multiply
81,583.11x = 122,437.05 × 39,487.95 - Step 4: Simplify right side
81,583.11x = 4,834,788,108.55 - Step 5: Solve for x
x = 4,834,788,108.55/81,583.11 - Step 6: Final answer
x = 59,262.12
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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.