Finding the Fourth Proportional to 112,879.79, 155,781.11 and 62,578.79
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Solution
The fourth proportional to 112,879.79, 155,781.11 and 62,578.79 is: 86,362.61
Step by Step Solution
- Step 1: Write the proportion equation
112,879.79 : 155,781.11 = 62,578.79 : x - Step 2: Convert to fraction form
112,879.79/155,781.11 = 62,578.79/x - Step 3: Cross multiply
112,879.79x = 155,781.11 × 62,578.79 - Step 4: Simplify right side
112,879.79x = 9,748,593,330.38 - Step 5: Solve for x
x = 9,748,593,330.38/112,879.79 - Step 6: Final answer
x = 86,362.61
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.