Finding the Fourth Proportional to 77,068,153.88, 115,700,881.80 and 66,207,825.08
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Solution
The fourth proportional to 77,068,153.88, 115,700,881.80 and 66,207,825.08 is: 99,396,486.85
Step by Step Solution
- Step 1: Write the proportion equation
77,068,153.88 : 115,700,881.80 = 66,207,825.08 : x - Step 2: Convert to fraction form
77,068,153.88/115,700,881.80 = 66,207,825.08/x - Step 3: Cross multiply
77,068,153.88x = 115,700,881.80 × 66,207,825.08 - Step 4: Simplify right side
77,068,153.88x = 7,660,303,743,816,155 - Step 5: Solve for x
x = 7,660,303,743,816,155/77,068,153.88 - Step 6: Final answer
x = 99,396,486.85
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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.