Finding the Fourth Proportional to 79,178,909.67, 109,228,066.74 and 68,710,232.70
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Solution
The fourth proportional to 79,178,909.67, 109,228,066.74 and 68,710,232.70 is: 94,786,426.26
Step by Step Solution
- Step 1: Write the proportion equation
79,178,909.67 : 109,228,066.74 = 68,710,232.70 : x - Step 2: Convert to fraction form
79,178,909.67/109,228,066.74 = 68,710,232.70/x - Step 3: Cross multiply
79,178,909.67x = 109,228,066.74 × 68,710,232.70 - Step 4: Simplify right side
79,178,909.67x = 7,505,085,883,076,530 - Step 5: Solve for x
x = 7,505,085,883,076,530/79,178,909.67 - Step 6: Final answer
x = 94,786,426.26
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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.