Finding the Fourth Proportional to 79,239,911.40, 118,859,867.10 and 72,437,466.60
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Solution
The fourth proportional to 79,239,911.40, 118,859,867.10 and 72,437,466.60 is: 108,656,199.90
Step by Step Solution
- Step 1: Write the proportion equation
79,239,911.40 : 118,859,867.10 = 72,437,466.60 : x - Step 2: Convert to fraction form
79,239,911.40/118,859,867.10 = 72,437,466.60/x - Step 3: Cross multiply
79,239,911.40x = 118,859,867.10 × 72,437,466.60 - Step 4: Simplify right side
79,239,911.40x = 8,609,907,653,136,688 - Step 5: Solve for x
x = 8,609,907,653,136,688/79,239,911.40 - Step 6: Final answer
x = 108,656,199.90
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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.