Finding the Fourth Proportional to 77,122,192.74, 115,682,789.70 and 19,613,967.12
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Solution
The fourth proportional to 77,122,192.74, 115,682,789.70 and 19,613,967.12 is: 29,420,823.67
Step by Step Solution
- Step 1: Write the proportion equation
77,122,192.74 : 115,682,789.70 = 19,613,967.12 : x - Step 2: Convert to fraction form
77,122,192.74/115,682,789.70 = 19,613,967.12/x - Step 3: Cross multiply
77,122,192.74x = 115,682,789.70 × 19,613,967.12 - Step 4: Simplify right side
77,122,192.74x = 2,268,998,433,525,675 - Step 5: Solve for x
x = 2,268,998,433,525,675/77,122,192.74 - Step 6: Final answer
x = 29,420,823.67
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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.