Finding the Fourth Proportional to 128,305,628.80, 192,448,775.04 and 40,863,618.88
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Solution
The fourth proportional to 128,305,628.80, 192,448,775.04 and 40,863,618.88 is: 61,292,349.14
Step by Step Solution
- Step 1: Write the proportion equation
128,305,628.80 : 192,448,775.04 = 40,863,618.88 : x - Step 2: Convert to fraction form
128,305,628.80/192,448,775.04 = 40,863,618.88/x - Step 3: Cross multiply
128,305,628.80x = 192,448,775.04 × 40,863,618.88 - Step 4: Simplify right side
128,305,628.80x = 7,864,153,397,157,417 - Step 5: Solve for x
x = 7,864,153,397,157,417/128,305,628.80 - Step 6: Final answer
x = 61,292,349.14
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.