Finding the Fourth Proportional to 39,438,989.81, 54,397,579.41 and 27,680,881.88
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Solution
The fourth proportional to 39,438,989.81, 54,397,579.41 and 27,680,881.88 is: 38,179,805.76
Step by Step Solution
- Step 1: Write the proportion equation
39,438,989.81 : 54,397,579.41 = 27,680,881.88 : x - Step 2: Convert to fraction form
39,438,989.81/54,397,579.41 = 27,680,881.88/x - Step 3: Cross multiply
39,438,989.81x = 54,397,579.41 × 27,680,881.88 - Step 4: Simplify right side
39,438,989.81x = 1,505,772,969,934,142 - Step 5: Solve for x
x = 1,505,772,969,934,142/39,438,989.81 - Step 6: Final answer
x = 38,179,805.76
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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.