Finding the Fourth Proportional to 69,853.74, 104,781.57 and 19,933.81
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Solution
The fourth proportional to 69,853.74, 104,781.57 and 19,933.81 is: 29,900.99
Step by Step Solution
- Step 1: Write the proportion equation
69,853.74 : 104,781.57 = 19,933.81 : x - Step 2: Convert to fraction form
69,853.74/104,781.57 = 19,933.81/x - Step 3: Cross multiply
69,853.74x = 104,781.57 × 19,933.81 - Step 4: Simplify right side
69,853.74x = 2,088,696,160.57 - Step 5: Solve for x
x = 2,088,696,160.57/69,853.74 - Step 6: Final answer
x = 29,900.99
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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.