Finding the Fourth Proportional to 86,554,517.13, 129,718,729.67 and 66,009,008.07
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Solution
The fourth proportional to 86,554,517.13, 129,718,729.67 and 66,009,008.07 is: 98,927,299.89
Step by Step Solution
- Step 1: Write the proportion equation
86,554,517.13 : 129,718,729.67 = 66,009,008.07 : x - Step 2: Convert to fraction form
86,554,517.13/129,718,729.67 = 66,009,008.07/x - Step 3: Cross multiply
86,554,517.13x = 129,718,729.67 × 66,009,008.07 - Step 4: Simplify right side
86,554,517.13x = 8,562,604,673,287,134 - Step 5: Solve for x
x = 8,562,604,673,287,134/86,554,517.13 - Step 6: Final answer
x = 98,927,299.89
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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.