Finding the Fourth Proportional to 76,831,686.87, 115,247,727.13 and 31,393,481.37
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Solution
The fourth proportional to 76,831,686.87, 115,247,727.13 and 31,393,481.37 is: 47,090,302.47
Step by Step Solution
- Step 1: Write the proportion equation
76,831,686.87 : 115,247,727.13 = 31,393,481.37 : x - Step 2: Convert to fraction form
76,831,686.87/115,247,727.13 = 31,393,481.37/x - Step 3: Cross multiply
76,831,686.87x = 115,247,727.13 × 31,393,481.37 - Step 4: Simplify right side
76,831,686.87x = 3,618,027,373,935,776 - Step 5: Solve for x
x = 3,618,027,373,935,776/76,831,686.87 - Step 6: Final answer
x = 47,090,302.47
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.