Finding the Fourth Proportional to 76,986.29, 115,552.09 and 39,572.63
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Solution
The fourth proportional to 76,986.29, 115,552.09 and 39,572.63 is: 59,396.30
Step by Step Solution
- Step 1: Write the proportion equation
76,986.29 : 115,552.09 = 39,572.63 : x - Step 2: Convert to fraction form
76,986.29/115,552.09 = 39,572.63/x - Step 3: Cross multiply
76,986.29x = 115,552.09 × 39,572.63 - Step 4: Simplify right side
76,986.29x = 4,572,700,398.14 - Step 5: Solve for x
x = 4,572,700,398.14/76,986.29 - Step 6: Final answer
x = 59,396.30
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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.