Finding the Fourth Proportional to 72,147.68, 108,221.16 and 19,557.08
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Solution
The fourth proportional to 72,147.68, 108,221.16 and 19,557.08 is: 29,335.52
Step by Step Solution
- Step 1: Write the proportion equation
72,147.68 : 108,221.16 = 19,557.08 : x - Step 2: Convert to fraction form
72,147.68/108,221.16 = 19,557.08/x - Step 3: Cross multiply
72,147.68x = 108,221.16 × 19,557.08 - Step 4: Simplify right side
72,147.68x = 2,116,489,883.81 - Step 5: Solve for x
x = 2,116,489,883.81/72,147.68 - Step 6: Final answer
x = 29,335.52
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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.