Finding the Fourth Proportional to 68,631.80, 102,870.90 and 39,063.80
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Solution
The fourth proportional to 68,631.80, 102,870.90 and 39,063.80 is: 58,551.99
Step by Step Solution
- Step 1: Write the proportion equation
68,631.80 : 102,870.90 = 39,063.80 : x - Step 2: Convert to fraction form
68,631.80/102,870.90 = 39,063.80/x - Step 3: Cross multiply
68,631.80x = 102,870.90 × 39,063.80 - Step 4: Simplify right side
68,631.80x = 4,018,528,263.42 - Step 5: Solve for x
x = 4,018,528,263.42/68,631.80 - Step 6: Final answer
x = 58,551.99
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1.5x scale
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.