Finding the Fourth Proportional to 81,972,227.70, 122,958,341.55 and 21,387,953.70
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Solution
The fourth proportional to 81,972,227.70, 122,958,341.55 and 21,387,953.70 is: 32,081,930.55
Step by Step Solution
- Step 1: Write the proportion equation
81,972,227.70 : 122,958,341.55 = 21,387,953.70 : x - Step 2: Convert to fraction form
81,972,227.70/122,958,341.55 = 21,387,953.70/x - Step 3: Cross multiply
81,972,227.70x = 122,958,341.55 × 21,387,953.70 - Step 4: Simplify right side
81,972,227.70x = 2,629,827,316,100,186 - Step 5: Solve for x
x = 2,629,827,316,100,186/81,972,227.70 - Step 6: Final answer
x = 32,081,930.55
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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.