Finding the Fourth Proportional to 72,161,084.99, 99,593,079.49 and 56,806,712.03
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Solution
The fourth proportional to 72,161,084.99, 99,593,079.49 and 56,806,712.03 is: 78,401,750.58
Step by Step Solution
- Step 1: Write the proportion equation
72,161,084.99 : 99,593,079.49 = 56,806,712.03 : x - Step 2: Convert to fraction form
72,161,084.99/99,593,079.49 = 56,806,712.03/x - Step 3: Cross multiply
72,161,084.99x = 99,593,079.49 × 56,806,712.03 - Step 4: Simplify right side
72,161,084.99x = 5,657,555,387,089,320 - Step 5: Solve for x
x = 5,657,555,387,089,320/72,161,084.99 - Step 6: Final answer
x = 78,401,750.58
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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.