Finding the Fourth Proportional to 73,912.32, 101,998.99 and 39,920.80
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Solution
The fourth proportional to 73,912.32, 101,998.99 and 39,920.80 is: 55,090.70
Step by Step Solution
- Step 1: Write the proportion equation
73,912.32 : 101,998.99 = 39,920.80 : x - Step 2: Convert to fraction form
73,912.32/101,998.99 = 39,920.80/x - Step 3: Cross multiply
73,912.32x = 101,998.99 × 39,920.80 - Step 4: Simplify right side
73,912.32x = 4,071,881,279.99 - Step 5: Solve for x
x = 4,071,881,279.99/73,912.32 - Step 6: Final answer
x = 55,090.70
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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.