Finding the Fourth Proportional to 12,089,217.40, 18,118,079.70 and 4,894,862.20
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Solution
The fourth proportional to 12,089,217.40, 18,118,079.70 and 4,894,862.20 is: 7,335,917.66
Step by Step Solution
- Step 1: Write the proportion equation
12,089,217.40 : 18,118,079.70 = 4,894,862.20 : x - Step 2: Convert to fraction form
12,089,217.40/18,118,079.70 = 4,894,862.20/x - Step 3: Cross multiply
12,089,217.40x = 18,118,079.70 × 4,894,862.20 - Step 4: Simplify right side
12,089,217.40x = 88,685,503,460,117.34 - Step 5: Solve for x
x = 88,685,503,460,117.34/12,089,217.40 - Step 6: Final answer
x = 7,335,917.66
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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.