Finding the Fourth Proportional to 91,115,471,772.48, 136,623,384,066.62 and 72,349,307,561.36
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Solution
The fourth proportional to 91,115,471,772.48, 136,623,384,066.62 and 72,349,307,561.36 is: 108,484,399,428.81
Step by Step Solution
- Step 1: Write the proportion equation
91,115,471,772.48 : 136,623,384,066.62 = 72,349,307,561.36 : x - Step 2: Convert to fraction form
91,115,471,772.48/136,623,384,066.62 = 72,349,307,561.36/x - Step 3: Cross multiply
91,115,471,772.48x = 136,623,384,066.62 × 72,349,307,561.36 - Step 4: Simplify right side
91,115,471,772.48x = 9,884,607,233,909,701,214,208 - Step 5: Solve for x
x = 9,884,607,233,909,701,214,208/91,115,471,772.48 - Step 6: Final answer
x = 108,484,399,428.81
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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.