Finding the Fourth Proportional to 71,572.40, 107,350.39 and 18,985.98
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Solution
The fourth proportional to 71,572.40, 107,350.39 and 18,985.98 is: 28,476.79
Step by Step Solution
- Step 1: Write the proportion equation
71,572.40 : 107,350.39 = 18,985.98 : x - Step 2: Convert to fraction form
71,572.40/107,350.39 = 18,985.98/x - Step 3: Cross multiply
71,572.40x = 107,350.39 × 18,985.98 - Step 4: Simplify right side
71,572.40x = 2,038,152,357.53 - Step 5: Solve for x
x = 2,038,152,357.53/71,572.40 - Step 6: Final answer
x = 28,476.79
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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.