Finding the Fourth Proportional to 102,831,496.84, 141,907,735.12 and 55,788,567.87
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Solution
The fourth proportional to 102,831,496.84, 141,907,735.12 and 55,788,567.87 is: 76,988,369.86
Step by Step Solution
- Step 1: Write the proportion equation
102,831,496.84 : 141,907,735.12 = 55,788,567.87 : x - Step 2: Convert to fraction form
102,831,496.84/141,907,735.12 = 55,788,567.87/x - Step 3: Cross multiply
102,831,496.84x = 141,907,735.12 × 55,788,567.87 - Step 4: Simplify right side
102,831,496.84x = 7,916,829,311,880,631 - Step 5: Solve for x
x = 7,916,829,311,880,631/102,831,496.84 - Step 6: Final answer
x = 76,988,369.86
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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.