Finding the Fourth Proportional to 71,710.80, 107,436.60 and 63,416.40
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Solution
The fourth proportional to 71,710.80, 107,436.60 and 63,416.40 is: 95,009.99
Step by Step Solution
- Step 1: Write the proportion equation
71,710.80 : 107,436.60 = 63,416.40 : x - Step 2: Convert to fraction form
71,710.80/107,436.60 = 63,416.40/x - Step 3: Cross multiply
71,710.80x = 107,436.60 × 63,416.40 - Step 4: Simplify right side
71,710.80x = 6,813,242,400.24 - Step 5: Solve for x
x = 6,813,242,400.24/71,710.80 - Step 6: Final answer
x = 95,009.99
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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.