Finding the Fourth Proportional to 83,620,990.12, 115,393,757.70 and 46,453,610.32
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Solution
The fourth proportional to 83,620,990.12, 115,393,757.70 and 46,453,610.32 is: 64,104,199.75
Step by Step Solution
- Step 1: Write the proportion equation
83,620,990.12 : 115,393,757.70 = 46,453,610.32 : x - Step 2: Convert to fraction form
83,620,990.12/115,393,757.70 = 46,453,610.32/x - Step 3: Cross multiply
83,620,990.12x = 115,393,757.70 × 46,453,610.32 - Step 4: Simplify right side
83,620,990.12x = 5,360,456,653,556,300 - Step 5: Solve for x
x = 5,360,456,653,556,300/83,620,990.12 - Step 6: Final answer
x = 64,104,199.75
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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.