Finding the Fourth Proportional to 87,868,511.88, 121,257,905.40 and 48,175,387.95
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Solution
The fourth proportional to 87,868,511.88, 121,257,905.40 and 48,175,387.95 is: 66,481,683.94
Step by Step Solution
- Step 1: Write the proportion equation
87,868,511.88 : 121,257,905.40 = 48,175,387.95 : x - Step 2: Convert to fraction form
87,868,511.88/121,257,905.40 = 48,175,387.95/x - Step 3: Cross multiply
87,868,511.88x = 121,257,905.40 × 48,175,387.95 - Step 4: Simplify right side
87,868,511.88x = 5,841,646,634,649,401 - Step 5: Solve for x
x = 5,841,646,634,649,401/87,868,511.88 - Step 6: Final answer
x = 66,481,683.94
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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.