Finding the Fourth Proportional to 71,357.67, 106,865.99 and 39,689.07
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Solution
The fourth proportional to 71,357.67, 106,865.99 and 39,689.07 is: 59,438.76
Step by Step Solution
- Step 1: Write the proportion equation
71,357.67 : 106,865.99 = 39,689.07 : x - Step 2: Convert to fraction form
71,357.67/106,865.99 = 39,689.07/x - Step 3: Cross multiply
71,357.67x = 106,865.99 × 39,689.07 - Step 4: Simplify right side
71,357.67x = 4,241,411,559.28 - Step 5: Solve for x
x = 4,241,411,559.28/71,357.67 - Step 6: Final answer
x = 59,438.76
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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.