Finding the Fourth Proportional to 81,808.24, 112,860.12 and 51,569.68
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Solution
The fourth proportional to 81,808.24, 112,860.12 and 51,569.68 is: 71,143.94
Step by Step Solution
- Step 1: Write the proportion equation
81,808.24 : 112,860.12 = 51,569.68 : x - Step 2: Convert to fraction form
81,808.24/112,860.12 = 51,569.68/x - Step 3: Cross multiply
81,808.24x = 112,860.12 × 51,569.68 - Step 4: Simplify right side
81,808.24x = 5,820,160,273.16 - Step 5: Solve for x
x = 5,820,160,273.16/81,808.24 - Step 6: Final answer
x = 71,143.94
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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.