Finding the Fourth Proportional to 77,145,285.96, 115,718,577.66 and 19,637,566.92
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Solution
The fourth proportional to 77,145,285.96, 115,718,577.66 and 19,637,566.92 is: 29,456,515.51
Step by Step Solution
- Step 1: Write the proportion equation
77,145,285.96 : 115,718,577.66 = 19,637,566.92 : x - Step 2: Convert to fraction form
77,145,285.96/115,718,577.66 = 19,637,566.92/x - Step 3: Cross multiply
77,145,285.96x = 115,718,577.66 × 19,637,566.92 - Step 4: Simplify right side
77,145,285.96x = 2,272,431,312,685,467 - Step 5: Solve for x
x = 2,272,431,312,685,467/77,145,285.96 - Step 6: Final answer
x = 29,456,515.51
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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.