Finding the Fourth Proportional to 68,456.95, 102,695.15 and 21,075.99
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Solution
The fourth proportional to 68,456.95, 102,695.15 and 21,075.99 is: 31,616.98
Step by Step Solution
- Step 1: Write the proportion equation
68,456.95 : 102,695.15 = 21,075.99 : x - Step 2: Convert to fraction form
68,456.95/102,695.15 = 21,075.99/x - Step 3: Cross multiply
68,456.95x = 102,695.15 × 21,075.99 - Step 4: Simplify right side
68,456.95x = 2,164,401,954.45 - Step 5: Solve for x
x = 2,164,401,954.45/68,456.95 - Step 6: Final answer
x = 31,616.98
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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.