Finding the Fourth Proportional to 81,984,966.72, 122,975,479.80 and 26,652,729.84
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Solution
The fourth proportional to 81,984,966.72, 122,975,479.80 and 26,652,729.84 is: 39,978,454.24
Step by Step Solution
- Step 1: Write the proportion equation
81,984,966.72 : 122,975,479.80 = 26,652,729.84 : x - Step 2: Convert to fraction form
81,984,966.72/122,975,479.80 = 26,652,729.84/x - Step 3: Cross multiply
81,984,966.72x = 122,975,479.80 × 26,652,729.84 - Step 4: Simplify right side
81,984,966.72x = 3,277,632,240,053,777 - Step 5: Solve for x
x = 3,277,632,240,053,777/81,984,966.72 - Step 6: Final answer
x = 39,978,454.24
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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.