Finding the Fourth Proportional to 77,277,729.40, 115,916,594.10 and 71,438,471.80
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Solution
The fourth proportional to 77,277,729.40, 115,916,594.10 and 71,438,471.80 is: 107,157,707.70
Step by Step Solution
- Step 1: Write the proportion equation
77,277,729.40 : 115,916,594.10 = 71,438,471.80 : x - Step 2: Convert to fraction form
77,277,729.40/115,916,594.10 = 71,438,471.80/x - Step 3: Cross multiply
77,277,729.40x = 115,916,594.10 × 71,438,471.80 - Step 4: Simplify right side
77,277,729.40x = 8,280,904,338,764,896 - Step 5: Solve for x
x = 8,280,904,338,764,896/77,277,729.40 - Step 6: Final answer
x = 107,157,707.70
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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.