Finding the Fourth Proportional to 84,005.94, 125,965.14 and 39,620.76
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Solution
The fourth proportional to 84,005.94, 125,965.14 and 39,620.76 is: 59,410.50
Step by Step Solution
- Step 1: Write the proportion equation
84,005.94 : 125,965.14 = 39,620.76 : x - Step 2: Convert to fraction form
84,005.94/125,965.14 = 39,620.76/x - Step 3: Cross multiply
84,005.94x = 125,965.14 × 39,620.76 - Step 4: Simplify right side
84,005.94x = 4,990,834,580.31 - Step 5: Solve for x
x = 4,990,834,580.31/84,005.94 - Step 6: Final answer
x = 59,410.50
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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.