Finding the Fourth Proportional to 68,239,196.40, 102,358,794.60 and 42,411,163.80
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Solution
The fourth proportional to 68,239,196.40, 102,358,794.60 and 42,411,163.80 is: 63,616,745.70
Step by Step Solution
- Step 1: Write the proportion equation
68,239,196.40 : 102,358,794.60 = 42,411,163.80 : x - Step 2: Convert to fraction form
68,239,196.40/102,358,794.60 = 42,411,163.80/x - Step 3: Cross multiply
68,239,196.40x = 102,358,794.60 × 42,411,163.80 - Step 4: Simplify right side
68,239,196.40x = 4,341,155,604,151,155 - Step 5: Solve for x
x = 4,341,155,604,151,155/68,239,196.40 - Step 6: Final answer
x = 63,616,745.70
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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.