Finding the Fourth Proportional to 77,070.99, 115,608.54 and 27,139.74
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Solution
The fourth proportional to 77,070.99, 115,608.54 and 27,139.74 is: 40,710.33
Step by Step Solution
- Step 1: Write the proportion equation
77,070.99 : 115,608.54 = 27,139.74 : x - Step 2: Convert to fraction form
77,070.99/115,608.54 = 27,139.74/x - Step 3: Cross multiply
77,070.99x = 115,608.54 × 27,139.74 - Step 4: Simplify right side
77,070.99x = 3,137,585,717.38 - Step 5: Solve for x
x = 3,137,585,717.38/77,070.99 - Step 6: Final answer
x = 40,710.33
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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.