Finding the Fourth Proportional to 39,118,920.96, 53,981,410.68 and 21,713,896.20
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Solution
The fourth proportional to 39,118,920.96, 53,981,410.68 and 21,713,896.20 is: 29,963,677.92
Step by Step Solution
- Step 1: Write the proportion equation
39,118,920.96 : 53,981,410.68 = 21,713,896.20 : x - Step 2: Convert to fraction form
39,118,920.96/53,981,410.68 = 21,713,896.20/x - Step 3: Cross multiply
39,118,920.96x = 53,981,410.68 × 21,713,896.20 - Step 4: Simplify right side
39,118,920.96x = 1,172,146,748,235,091.25 - Step 5: Solve for x
x = 1,172,146,748,235,091.25/39,118,920.96 - Step 6: Final answer
x = 29,963,677.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.