Finding the Fourth Proportional to 102,831,496.09, 141,907,734.08 and 55,788,567.12
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Solution
The fourth proportional to 102,831,496.09, 141,907,734.08 and 55,788,567.12 is: 76,988,368.82
Step by Step Solution
- Step 1: Write the proportion equation
102,831,496.09 : 141,907,734.08 = 55,788,567.12 : x - Step 2: Convert to fraction form
102,831,496.09/141,907,734.08 = 55,788,567.12/x - Step 3: Cross multiply
102,831,496.09x = 141,907,734.08 × 55,788,567.12 - Step 4: Simplify right side
102,831,496.09x = 7,916,829,147,499,456 - Step 5: Solve for x
x = 7,916,829,147,499,456/102,831,496.09 - Step 6: Final answer
x = 76,988,368.82
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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.