Finding the Fourth Proportional to 86,991,085.18, 119,936,257.43 and 71,252,128.27
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Solution
The fourth proportional to 86,991,085.18, 119,936,257.43 and 71,252,128.27 is: 98,236,659.32
Step by Step Solution
- Step 1: Write the proportion equation
86,991,085.18 : 119,936,257.43 = 71,252,128.27 : x - Step 2: Convert to fraction form
86,991,085.18/119,936,257.43 = 71,252,128.27/x - Step 3: Cross multiply
86,991,085.18x = 119,936,257.43 × 71,252,128.27 - Step 4: Simplify right side
86,991,085.18x = 8,545,713,598,626,101 - Step 5: Solve for x
x = 8,545,713,598,626,101/86,991,085.18 - Step 6: Final answer
x = 98,236,659.32
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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.