Finding the Fourth Proportional to 83,657.13, 125,487.30 and 20,477.79
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Solution
The fourth proportional to 83,657.13, 125,487.30 and 20,477.79 is: 30,717.08
Step by Step Solution
- Step 1: Write the proportion equation
83,657.13 : 125,487.30 = 20,477.79 : x - Step 2: Convert to fraction form
83,657.13/125,487.30 = 20,477.79/x - Step 3: Cross multiply
83,657.13x = 125,487.30 × 20,477.79 - Step 4: Simplify right side
83,657.13x = 2,569,702,577.07 - Step 5: Solve for x
x = 2,569,702,577.07/83,657.13 - Step 6: Final answer
x = 30,717.08
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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.